[0001] The present invention relates to power hand tools and more specifically to a clamp
arrangement for releasably securing an accessory to an oscillating power hand tool.
[0002] Power hand tools are provided in many examples for performing a wide range of tasks.
For example, some power hand tools can include an output member that is driven by
a motor and that couples with an accessory to perform a working operation onto a work
piece. For example, some hand tools can provide various configurations for attaching
cutting accessories, grinding accessories, sanding accessories and the like. Some
power hand tools are configured as oscillating tools that are operable to transmit
an oscillating motion onto the accessory.
[0003] During the course of performing a working operation, a user may want to exchange
one accessory for another accessory. For example, a user may want to exchange one
grinding accessory with another grinding accessory or one sanding platen with another
sanding platen. Alternatively, a user may wish to replace a cutting accessory with
another cutting accessory. It is also contemplated that a user may want to replace
a given accessory dedicated to one task (such as sanding) with another accessory dedicated
toward another task (such as cutting for example). In any event, many power hand tools
require the use of a secondary tool to swap out accessories. For example, many power
hand tools require the use of a hand screw driver that can be used to retract a fastener
that may lock the accessory to the output member of the power hand tool. In other
examples, a wrench or other hand tool may be required to remove or unlock a given
accessory from the power hand tool and subsequently lock another accessory back to
the power hand tool.
[0004] Known clamp arrangements which do not require use of a secondary tool to swap out
accessories are shown, for example in
US 2011/0266759 A1. This discloses a clamp arrangement comprising first and second clamp members capable
of selectively holding an oscillating accessory therebetween. The first clamp member
is axially moveable, under action of a rotatable lever mechanism, between an open
position along the output axis of the tool, which open position permits removal and
insertion of the accessory and a closed position along the output axis of the tool,
which closed position clamps the accessory to the oscillating tool output axis. The
second clamp member and the accessory are formed with complimentary mounting features
which permit selective alignment of the accessory with the mounting features.
[0005] DE 202011051408 U1 discloses a quick release clamp mechanism which can clamp a working member between
a working mandrel and a fastening member. The fastening member is axially moveable
along an oscillating axis of the tool to selectively clamp or release the working
member.
[0006] In neither of the above known clamping arrangements is the first clamp member able
to rotate relative to the tool axis.
[0007] The present invention is set out in claim 1, with preferred features thereof set
out in the dependent claim.
[0008] The present invention provides a clamp arrangement for securing an accessory to an
oscillating power tool, which comprises a clamp assembly including a first clamp member
arranged to move relative to a second clamp member of the clamp assembly. The first
clamp member is arranged to move between a closed position wherein the clamp assembly
retains the accessory and an open position wherein the first clamp member is offset
from the accessory permitting removal of the first accessory from the clamp assembly
while the first clamp member remains coupled to the clamp assembly. The second clamp
member has a first portion that opposes the first clamp member and is arranged to
cooperate with the first clamp member to clamp an accessory between the first and
second clamp members.
[0009] Further areas of applicability will become apparent from the description provided
herein. The description and specific examples in this summary are intended for purposes
of illustration only.
[0010] The drawings described herein are for illustrative purposes only of selected embodiments
and not all possible implementations of the invention.
Fig. 1 is a perspective view of a known clamp arrangement, not forming part of the
present invention;
Fig. 2 is a perspective view of a clamp assembly of the clamp arrangement shown in
Fig. 1 and shown with the clamp assembly in the closed position retaining the first
accessory;
Fig. 3 is an exploded perspective view of the clamp assembly of Fig. 2;
Fig. 4 is a sectional view of the clamp assembly of Fig. 2 and shown with the clamp
assembly in the closed position and a lever of the clamp assembly in a first position;
Fig. 5 is a cross-sectional view of the clamp assembly of Fig. 4 and shown with the
clamp assembly in the open position resulting from the lever being rotated about a
pivot axle into a second position wherein the first accessory is subsequently lifted
out of engagement with the first clamp member;
Fig. 6 is a cross-sectional view of the clamp assembly of Fig. 5 shown with the clamp
assembly in the open position and the lever in the second position and illustrating
the first accessory being removed from the clamp assembly;
Figs. 7-9 are perspective views of the clamp assembly that generally correspond to
the sequence illustrated in Figs. 4-6 for removing the first accessory from the clamp
assembly;
Figs. 10-12 are perspective views of the clamp assembly that illustrate an exemplary
sequence of orienting the first accessory in a different rotational position relative
to the clamp assembly;
Figs. 13-15 are cross-sectional views of the clamp assembly taken through a spindle
of the power hand tool and shown with the first accessory rotated at different positions
around an axis of the spindle;
Fig. 16 is a perspective view of the clamp arrangement of the present teachings and
shown with the clamp assembly secured to the second accessory;
Fig. 17 is an exploded perspective view of the clamp assembly and second accessory
illustrated in Fig. 16;
Fig. 18 is a sectional view of the clamp assembly of Fig. 16 and shown with the clamp
assembly in the open position resulting from movement of the lever around the pivot
axle to the second position for receipt of a mounting collar of the second accessory;
Fig. 19 is a cross-sectional view of the clamp assembly of Fig. 18 and shown with
the mounting collar of the second accessory positioned generally between first and
second clamp members of the clamp assembly while the lever is maintained in the second
position;
Fig. 20 is a cross-sectional view of the clamp assembly of Fig. 19 and illustrating
the clamp assembly in the closed position as a result of the lever being released
and returned to the first position causing the first and second clamp members to clamp
the mounting collar;
Fig. 21 is a perspective view of an exemplary third accessory;
Fig. 22 is a partial cross-section of the clamp assembly and shown with the third
accessory secured to an auxiliary mounting surface of the second clamp member;
Figs. 23-25 illustrate an exemplary assembly sequence of a fourth accessory having
a throat that defines a relatively narrower opening as compared to the first accessory
wherein the throat is slidably directed through channels provided on the spindle;
Fig. 26 is an exploded partial plan view of the fourth accessory and shown adjacent
to the second clamp member and illustrated with the spindle in cross-section taken
through the channels;
Fig. 27 is a partial plan view of a fifth accessory having circular mounting passages
according to additional features;
Fig. 28 is a partial plan view of the fifth accessory shown in Fig. 27 and illustrated
interfacing with the second clamp member;
Fig. 29 is a side view of a clamp arrangement constructed in accordance to another
known example, again, not forming part of the present invention;
Fig. 30 is a sectional view of the clamp assembly of Fig. 29 and shown with the clamp
assembly in a closed position and a lever of the clamp assembly in a first position;
Fig. 31 is a perspective view of the second clamp member of the clamp assembly of
Fig. 30;
Fig. 32 is a plan view of an accessory constructed in accordance to one example of
the present teachings;
Fig. 33 is a side view of the accessory of Fig. 32 shown placed on the second clamp
member and shown with the first clamp member removed for illustrative purposes;
Fig. 34 is a side view of the clamp assembly shown during removal of the accessory
where the lever is moved from the first position (phantom) to a second position (solid
line) and the first clamp member is raised away from engagement with the accessory;
Fig. 35 is an exploded perspective view of a clamp assembly constructed in accordance
to another example, but which is not part of the present invention, but showing a
fastener for selectively and alternatively coupling the clamp assembly to one of a
first power tool or a second power tool;
Fig. 36 is a sectional view of the clamp assembly of Fig. 35 shown coupled to a first
tool mating detail of the first power tool;
Fig. 37 is a cross-sectional view of the clamp assembly of Fig. 36 and shown with
the clamp assembly in the open position resulting from the lever being rotated about
a pivot axle into a second position wherein an accessory may be inserted for clamping;
Fig. 38 is a cross-sectional view of the clamp assembly of Fig. 37 and shown with
the clamp assembly in a closed position wherein the accessory is clamped between the
first and second clamp members;
Fig. 39 is a front perspective view of a clamp assembly, which os not part of the
present invention;
Fig. 40 is an exploded perspective view of the clamp assembly of Fig. 39 and shown
operatively associated with the first power tool and a fastener;
Fig. 41 is a cross-sectional view of the clamp assembly of Fig. 40 shown in an installed
position wherein the fastener threadably mates with an output member of the first
power tool;
Fig. 42 is a cross-sectional view of the clamp assembly of Fig. 41 and shown with
the clamp assembly in the open position for receipt of an accessory;
Fig. 43 is a cross-sectional view of the clamp assembly of Fig. 42 and shown with
the clamp assembly in the closed position and clamping the accessory between a first
and second clamp member;
Fig. 44 is an exploded perspective view of a clamp assembly which is not part of the
present invention;
Fig. 45 is an exploded cross-sectional view of the clamp assembly of Fig. 44;
Fig. 46 is a cross-sectional view of the clamp assembly of Fig. 45 and shown with
an accessory coupled to an outboard face of a clamp member with an adapter plate,
a clamp plate, and a fastener;
Fig. 47 is a front perspective view of a clamp assembly which is not part of the present
invention;
Fig. 48 is an exploded perspective view of the clamp assembly of Fig 47;
Fig. 49 is a cross-sectional view of the clamp assembly of Fig. 47 and shown with
the clamp assembly in the open position for receipt of an accessory;
Fig. 50 is a cross-sectional view of the clamp assembly of Fig. 49 and shown with
the clamp assembly in the closed position and clamping the accessory between the first
and second clamp member;
Fig. 51 is a front perspective view of a clamp assembly which is not part of the present
invention;
Fig. 52 is an exploded perspective view of the clamp assembly of Fig. 51;
Fig. 53 is a cross-sectional view of the clamp assembly of Fig. 51 and shown with
the clamp assembly in the open position for receipt of an accessory;
Fig. 54 is a cross-sectional view of the clamp assembly of Fig. 53 and shown with
the clamp assembly in the closed position for clamping the accessory between the first
and second clamp member;
Fig. 55 is a cross-sectional view of clamp assembly constructed in accordance to other
examples, which are not part of the present invention, and shown in an open position
for receipt of an accessory in the form of a sanding platen;
Fig. 56 is a cross-sectional view of the clamp assembly of Fig. 55 and shown with
the clamp assembly in the closed position and clamping the accessory between the first
and second clamp member;
Fig. 57 is a front perspective view of a clamp assembly constructed in accordance
with the present invention and with the clamp assembly shown in an open position;
Fig. 58 is an exploded perspective view of the clamp assembly of Fig. 57;
Fig. 59 is a front perspective view of the clamp assembly of Fig. 57 and shown in
a closed position;
Fig. 60 is a front perspective view of a clamp assembly having an alternate attachment
plate and shown in the closed position;
Fig. 61 is a front perspective view of a cam body of the clamp assembly of Fig. 57;
Fig. 62 is a perspective view of a first clamp member body of the clamp assembly of
Fig. 57;
Fig. 63 is a sectional view of the cam body of Fig. 61;
Fig. 64 is a sectional view of the first clamp member body of Fig. 62;
Fig. 65 is another sectional view of the clamp member body of Fig. 62;
Fig. 66 is a plan view of the cam body of Fig. 61;
Fig. 67 is a plan view of the first clamp member body of Fig. 62;
Fig. 68 is a sectional view of the clamp assembly of Fig. 57 and shown in a closed
position;
Fig. 69 is a sectional view of the clamp assembly of Fig. 57 and shown in an intermediate
position;
Fig. 70 is a sectional view of the clamp assembly of Fig. 57 and shown in an open
position;
Fig. 71 is a top perspective view of a clamp arrangement constructed in accordance
to additional features of the present disclosure;
Fig. 72 is a bottom perspective view of the clamp arrangement of Fig. 71;
Fig. 73 is a top perspective view of a clamp arrangement constructed in accordance
to other features of the present disclosure;
Fig. 74 is a bottom perspective view of the clamp arrangement of Fig. 73;
Fig. 75 is a perspective view of an alternate attachment plate according to the present
disclosure;
Fig. 76 is a perspective view of an alternate attachment plate according to the present
disclosure;
Fig. 77 is a perspective view of an alternate attachment plate according to the present
disclosure; and
Fig. 78 is a front perspective view of an alternative clamp assembly.
[0011] Corresponding reference numerals indicate corresponding parts throughout the several
views of the drawings.
[0012] Known examples and example embodiments of the invention will now be described more
fully with reference to the accompanying drawings.
[0013] With initial reference to Fig. 1, a known clamp arrangement is shown and generally
identified at reference numeral 10. The clamp arrangement 10 is shown operatively
associated with a power tool 12 for selectively and alternatively retaining various
accessories, such as a first accessory 14a or a second accessory 14b. The exemplary
power tool can generally include a tool body 18 including a housing 20 that generally
contains a motor 22 that drives an output member 24. The output member 24 can be coupled
to a spindle 26. The exemplary power tool 12 is configured for providing an oscillating
motion onto the spindle 26. It will be appreciated that while the clamp arrangement
10 is disclosed herein as part of an oscillating power hand tool, the clamp arrangement
10 may be also configured for use with other power tools that releasably secure an
accessory.
[0014] The clamp arrangement 10 can further include a clamp assembly 30 that operatively
cooperates with an actuator such as a lever 32. The clamp assembly 30 can generally
include a first clamp member 36 and a second clamp member 38. The lever 32 can include
a lever arm 40 that includes a user engagement portion 42 and a block 44. The lever
32 can further include a pivot portion 46 having a pivot axle 48.
[0015] With continued reference to Fig. 1, the second accessory 14b will be briefly described.
The second accessory 14b can generally include a sanding platen 50 having a platen
body 52 and a mounting collar 54. In the example shown, the mounting collar 54 can
be coupled to the body 52 by way of a series of fasteners 56. The body 52 can be configured
to support an abrasive sheet, such as sand paper and the like as is known in the art.
The mounting collar 54 can generally include an upper plate portion 60 having a plurality
of mounting features 62. In the example shown, the mounting features 62 are generally
in the form of passages formed through the mounting collar 54. The mounting collar
54 can generally include an open-ended aperture or throat 66 configured to accept
the spindle 26 in an assembled position as will be described herein.
[0016] With additional reference now to Figs. 2 and 3, the clamp assembly 30 will be described
in greater detail. The second clamp member 38 can include a second clamp body 70 generally
in the form of a ring having a central opening 72. The second clamp body 70 can generally
comprise a second clamping surface 74 having a plurality of mounting features 76 formed
thereon. In the example shown, the plurality of mounting features 76 are in the form
of male protrusions 78. In the particular example shown, eight protrusions each having
a tapered shape or form are provided. However, other configurations are contemplated.
The second clamp body 70 can additionally include an auxiliary attachment surface
80 having a plurality of auxiliary mounting features 82 (Fig. 2). Again, the plurality
of auxiliary mounting features 82 are shown in the form of male protrusions and may
include a similar eight protrusion configuration as provided on the second clamping
surface 74. The auxiliary mounting features 82 can each have a diameter of 2.4mm.
Other configurations are contemplated.
[0017] With reference now to Figs. 3 and 4, the first clamp member 36 can generally include
a first clamp member body 84 having an annular flange 86. The first clamp member body
84 can include a first clamping surface 87 having a plurality of mounting features
88 (Fig. 4). In the example shown, the plurality of mounting features 88 are in the
form of recesses that cooperatively receive the corresponding plurality of mounting
features 76 of the second clamp member 38. The mounting features 88 can have any configuration,
such as blind bores, or circular grooves being suitable to accept the male protrusions
of the mounting features 76. The annular flange 86 can generally extend radially on
an end of an outer hub 90 of the first clamp member body 84. The annular flange 86
can have a lever opposing surface 91. The first clamp member body 84 can further include
an inner hub 92 that defines a first clamp member opening 94. The first clamp member
opening 94 can be configured to receive the spindle 26. An annular channel 96 can
be formed between the outer hub 90 and the inner hub 92. The annular channel 96 can
have a terminal surface 98.
[0018] The lever 32 can generally include a lever body 100 having the user engagement portion
42 formed generally on a first end and the pivot portion 46 formed on an opposite
end. According to one known example, the pivot portion 46 can generally include a
pair of lobes 102 that each define an axle passage 104. The lever body 100 can further
include a pocket 108 having a flange opposing surface 110 for generally receiving
two steel balls and the annular flange 86 of the first clamp member 36. The block
44 can generally include a pair of transverse posts 116 and a blind bore 118. The
axle passages 104 provided in the lobes 102 can be configured to receive the pivot
axle 48.
[0019] The clamp arrangement 10 can additionally include a first biasing member 120 and
a second biasing member 122. The first biasing member 120 can be at least partially
received by the annular channel 96 provided on the first clamp member body 84. The
second biasing member 122 can be at least partially received into the blind bore 118
of the block 44. The first biasing member 120 can be generally supported on an upper
end by a washer 126 that is correspondingly supported by a bearing 130 journalled
around the spindle 26. The spindle 26 can additionally include a pair of flats 132
and channels 134 formed on a distal end. The flats 132 can generally correspond to
the profile of the opening 72 formed in the second clamp member 38. The flats 132
can cooperate with the profile of the opening 72 to key the second clamp member 38
to the spindle 26 and inhibit rotation of the second clamp member 38 around a spindle
axis 140. In the example provided, the output member 24 can be generally in the form
of a drive fork that can impart rotational motion onto the spindle 26 around the spindle
axis 140. Other configurations are contemplated. A support bearing 142 can be arranged
on one end of the spindle 26 for cooperatively mounting within the housing 20.
[0020] Returning to Fig. 3, the first accessory 14a can be generally in the form of a cutting
member having a working portion 146 and an attachment portion 148. The attachment
portion 148 can include a plurality of mounting features 150 in the form of passages
formed through the first accessory 14a. The attachment portion 148 can further include
an open-ended aperture or throat 152 for selectively receiving a portion of the spindle
26 in an assembled position as will be described herein.
[0021] With specific reference now to Figs. 4-6, an exemplary sequence of removing the first
accessory 14a from the clamp assembly 30 will be described. With initial reference
to Fig. 4, the clamp assembly 30 is shown in a closed position wherein the biasing
member 120 is supported on a first end by the washer 126 and provides a downward biasing
force onto the first clamp member 36 at the annular channel 96. It is important to
recognize that in the particular example shown, the second clamp member 38 is fixed
to the spindle 26. As shown, the male protrusions of the mounting features 76 selectively
locate into the recesses of the mounting features 88 formed on the first clamp member
36. The first accessory 14a therefore is clamped between the second clamping surface
74 and the first clamping surface 87 while the male protrusions of the mounting features
76 locate through passages of the mounting features 150 formed on the first accessory
14a. Those skilled in the art will recognize that while some of the mounting features
are described and shown as male protrusions and some of the mounting features are
described and shown as recesses, the locations may be swapped. Moreover, other interlocking
geometries may be used. As viewed in Fig. 4, the lever 32 is shown and generally described
herein as the first position.
[0022] With specific reference now to Fig. 5, the lever 32 is shown rotated around a pivot
axle axis 160 of the pivot axle 48 to a second position. In the second position, the
clamp assembly 30 is generally in the open position where the first clamp member 36
is displaced or offset relative to the second clamp member 38. In order to move the
lever 32 from the first position (Fig. 4) to the second position (Fig. 5), a user
can urge the user engagement portion 42 (such as by pulling the user engagement portion
42 with an index finger) in a direction generally upwardly as viewed in Fig. 5 and
toward the housing 20. In order to rotate the lever 32 around the pivot axle 48, a
user must overcome the biasing forces of the respective first and second biasing members
120 and 122. During rotation of the lever 32 around the pivot axle 48, the flange
opposing surface 110 in the pocket 108 of the lever body 100 (Fig. 3) generally transmits
an upward force (in a direction against the biasing force of the first biasing member
120) onto the lever opposing surface 91. In this regard, the lever 32 can generally
lift the first clamp member 36 at the annular flange 86 to move the first clamping
surface 87 away from the second clamping surface 74. It will be appreciated that other
mechanical configurations other than a lever that pivots about a pivot axle may be
used. For example, a camming configuration or slidable actuation member may be additionally
or alternatively employed.
[0023] With the clamp assembly 30 in the open position, the first and second clamp members
36 and 38, respectively, provide enough clearance, such that a user can remove the
first accessory 14a away from the clamp assembly 30. In one example, it may be necessary
to initially lift the first accessory 14a away from the male protrusions of the mounting
features 76 before pulling the first accessory 14a away from the clamp assembly 30
(Fig. 6).
[0024] The clamp arrangement 10 can provide a significant mechanical advantage that can
provide a particularly robust clamping action onto an accessory in a tight package
requiring relatively small space. In this regard, by mounting the pivot axle 48 on
an opposite end of the user engagement portion 42 a user is offered a significant
moment arm that can act against the respective biasing forces of the first and second
biasing members 120 and 122 while still offering a significant clamping force. According
to other advantages, the location of the user engagement portion 42 provides an ergonomically
pleasing configuration adjacent to the housing 20 where a user's palm would be generally
positioned. In this regard, an index finger can easily negotiate onto the user engagement
portion 42 without having to significantly reposition a user's palm. Moreover, the
user engagement portion 42 can be generally located between the housing 20 and the
first accessory 14a, such that a user can easily pull up on the user engagement portion
42 in a direction toward the housing with one hand while removing/installing any given
accessory with the other hand.
[0025] With specific reference now to Figs. 7-9, perspective views of the clamp assembly
30 are shown wherein Fig. 7 generally corresponds to the sectional view of Fig. 4
of the clamp assembly 30 in the closed position and the lever 32 in the first position.
Fig. 8 generally corresponds to the sectional view of Fig. 5 where the clamp assembly
30 is in the open position and the lever 32 is in the second position. Fig. 9 generally
corresponds to the sectional view of Fig. 6 where the clamp assembly 30 is in the
open position and the lever 32 is in the second position while the first accessory
14a is removed from the clamp assembly 30.
[0026] With reference now to Figs. 10-12, the clamp assembly 30 can be used to selectively
clamp a given accessory, such as the first accessory 14a through a variety of rotational
orientations around the spindle axis 140. As identified above, the second clamp member
38 includes eight mounting features 76 however other configurations may be incorporated.
The first accessory 14a includes nine mounting features or passages 150. The first
accessory 14a can be arranged in a plurality of different rotational orientations,
such that the male protrusions 78 can be aligned for passing through the passages
150 by rotating the first accessory 14a into the orientation desired. As can be appreciated,
it may be advantageous to orient the first accessory 14a differently for a particular
task. Once the passages 150 are aligned for receipt of the male protrusions 78 on
the second clamp member 38 the attachment portion 148 of first accessory is dropped
onto the second clamping surface 74.
[0027] In the exemplary sequence shown in Figs. 10-12, a user can initially pull up the
lever 32 at the user engagement portion 42 causing the annular flange 86 of the first
clamp member 36 to be lifted as previously described. With the first clamp member
36 displaced from the second clamp member 38, the first accessory 14a can be oriented
into the desired radial position and aligned with the corresponding male protrusions
78. The user can then release the user engagement portion 42 allowing the first biasing
member 120 (and the second biasing member 122) to urge the first clamp member 36 in
a direction toward the second clamp member 38 until the respective first and second
clamping surfaces 87 and 74, respectively, engage and clamp the attachment portion
148 of the first accessory 14a (Fig. 12).
[0028] Turning now to Figs. 13-15, various known examples are shown with the first accessory
14a mounted around the second clamp member 38. In the examples shown, the male protrusions
of the mounting features 76 can be arranged to allow the first accessory 14a to be
indexed at about thirty-degree increments around the second clamping surface 74. When
describing the male protrusions of the mounting features 76 in the context of a clock,
mounting features are absent at the two, four, eight and ten o'clock positions. Other
examples are contemplated.
[0029] With reference now to Figs. 16-20, the known clamp assembly 30 will be described
clamping the second accessory 14b. As described above, the clamp assembly 30 is normally
biased into the closed position. As illustrated in Fig. 18, the lever 32 is shown
rotated around the pivot axle axis 160 of the pivot axle 48 to the second position.
In the second position, the clamp assembly 30 is generally in the open position where
the first clamp member 36 is displaced relative to the second clamp member 38. With
the clamp assembly 30 in the open position, the first and second clamp members 36
and 38 respectively provide enough clearance to accept the mounting collar 54 of the
second accessory 14b.
[0030] While a user maintains an upward force on the user engagement portion 42 of the lever
32, the second accessory 14b is directed toward the clamp assembly 30, such that the
spindle 26 is generally located through the throat 66 (Fig. 19). Once the desired
mounting features 62 of the mounting collar 54 are aligned with the desired mounting
features 76 of the second clamp member 38, the user can release the user engagement
portion 42 of the lever 32 allowing the respective first and second biasing members
120 and 122 to return the lever 32 to the first position (Fig. 20). In the first position,
the clamp assembly 30 is in the closed position, such that the first clamping surface
87 of the first clamp member 36 as well as the second clamping surface 74 of the second
clamp member 38 cooperatively clamp the mounting collar 54 of the second accessory
14b.
[0031] Turning now to Figs. 21 and 22, a third accessory 14c and a method of attaching the
third accessory 14c to the auxiliary attachment surface 80 of the second clamp member
38 will be described. The third accessory 14c can generally include an iron-shaped
member 170. A plurality of mounting features 176 can be formed around an upper surface
178 of a body 172 of the third accessory 14c. In the example shown, the plurality
of mounting features 176 can be in the form of recesses having a profile that generally
mates with the plurality of mounting features 82 extending from the auxiliary attachment
surface 80. A mounting aperture 180 can be formed through the body 172 of the third
accessory 14c for accepting a fastener 182 (Fig. 22). The fastener 182 can threadably
mate with a threaded bore 186 defined at a distal end of the spindle 26. Those skilled
in the art will readily appreciate that movement of the lever 32 will not affect the
attachment of the third accessory 14c as the third accessory 14c only interfaces with
the second clamp member 38 that is rigidly fixed to the spindle 26.
[0032] Turning now to Figs. 23-26, a fourth accessory 14d will be described cooperating
with the spindle 26 and the second clamp member 38. The channels 134 formed in the
spindle 26 can provide clearance for accepting other accessories, such as accessories
that may define a throat 152 having a smaller entrance. In this regard, the reduced
geometry throat of an accessory may be initially negotiated through the channel 134
prior to rotating the accessory into the desired orientation relative to the spindle
26 and subsequently clamping the accessory to the clamp assembly 30.
[0033] The fourth accessory 14d can have an open-ended aperture or throat 190 formed on
an attachment portion 192. The throat 190 can generally span a distance 194. As compared
to the throat 152 on the first accessory 14a, the throat 190 provides a reduced distance
194. The channels 134 provided on the spindle 26 are offset a distance 196 that is
generally less than the distance 194, such that the throat 190 can be advanced through
the channels 134 until clearing the channels 134 at an opposite end of the spindle
26 (see Fig. 24). Once the throat 190 has cleared the channels 134, a user can rotate
the fourth accessory 14d to a desired orientation around the second clamping surface
74 of the second clamp member 38. Once the desired orientation has been attained,
the attachment portion 192 of the fourth accessory 14d can be dropped onto the second
clamping surface 74 while the male protrusions of the mounting features 76 locate
through respective passages 198 formed through the attachment portion 192 on the fourth
accessory 14d (Fig. 25). Fig. 26 illustrates a plan view that represents the relative
distances 194 of the throat 190 and 196 of the channels 134.
[0034] With reference now to Figs. 27 and 28, a fifth accessory 14e is shown that has an
attachment portion 200 having a plurality of mounting formations 202 formed therethrough.
The mounting formations 202 can be generally in the form of circular apertures. The
circular apertures can have a tapered shape. Other dimensions are contemplated that
may still have a diameter (or opening in general) that is large enough to accept the
diameter of the respective mounting features 76 on the second clamp member 38.
[0035] With reference now to Figs. 29-34, another known clamp arrangement is shown and generally
identified at reference numeral 210. The clamp arrangement 210 is shown operatively
associated with a power tool 212 for selectively and alternatively retaining various
accessories such as a sixth accessory 14f. The exemplary power tool 212 can generally
include a tool body 218 including a housing 220 that generally contains a motor 222
that drives an output member 224. The output member 224 can be coupled to a spindle
226. The exemplary power tool 212 is configured for providing an oscillating motion
onto the spindle 226. As with the clamp arrangement 10 described above, the clamp
arrangement 210, while described herein as part of an oscillating hand tool, can also
be used with other power tools that releasably secure an accessory.
[0036] The clamp arrangement 210 can further include a clamp assembly 230 (Fig. 30) that
operatively cooperates with a lever 232. The clamp assembly 230 can generally include
a first clamp member 236 and a second clamp member 238. The lever 232 can include
a lever arm 240 that includes a user engagement portion 242. The lever 232 can further
include a pivot portion 246 having a pivot axle 248.
[0037] With specific reference now to Figs. 30 and 31, the second clamp member 238 will
be further described. The second clamp member 238 can include a second clamp body
250 generally in the form of a ring having a central opening 252. The second clamp
body 250 can generally comprise a second clamping surface 254 having a plurality of
mounting features 256 formed thereon. In one example, the second clamp body 250 and
the plurality of mounting features 256 can be formed as a unitary, monolithic part,
such as by precision cast steel.
[0038] As will become appreciated by the following discussion, the second clamp member 238
is configured such that the second clamping surface 254 does not actually engage the
sixth accessory 14f. In the example shown, the plurality of mounting features 256
are in the form of male conical protrusions 258. In the particular example shown,
eight protrusions or male conical protrusions 258 are configured to each have a tapered
body portion 260 that generally tapers from the second clamping surface 254 toward
a tip 262. The tip 262 can generally comprise a spherical geometry. The male conical
protrusions 258 each have a height 264 measured from the second clamping surface 254
to a terminal end 266 of the tip 262. The male conical protrusions 258 can further
define an angle 270 measured from a longitudinal axis 272 to an outer surface 276
of the tapered body portion 260.
[0039] The male conical protrusions 258 can be configured to engage apertures of the sixth
accessory 14f at a position intermediate the terminal end 266 of the tip 262 and the
second clamping surface 254. Explained differently, the sixth accessory 14f can be
clamped with the lever 232 in a first position and the clamp assembly 230 closed (Fig.
30), such that the sixth accessory 14f is offset a distance 280 from the second clamping
surface 254. According to one example, the height 264 can be substantially about 4mm
and the angle 270 can be substantially about between 20° and 30° and more specifically
25°. A diameter of the male conical protrusions 258 measured at the second clamping
surface 254 can be substantially about 3mm. The surface finish of the male conical
protrusions 258 can be sufficiently hard so as not to deform from interaction with
the sixth accessory 14f. In one example, the male conical protrusions are at least
10 points (Rockwell hardness testing) harder than the sixth accessory 14f. Other heights
and angles are contemplated.
[0040] With specific reference now to Fig. 30, the first clamp member 236 can generally
include a first clamp member body 284 having an annular flange 286. The first clamp
member body 284 can include a clamping surface 287 that has a plurality of mounting
features 288 that are in the form of recesses that cooperatively receive the corresponding
plurality of mounting features 256 of the second clamp member 238. The mounting features
288 can have any configuration, such as blind bores having diameters suitable to accept
at least portions of the male conical protrusions 258 of the mounting features 256.
The annular flange 286 can generally extend radially from an outer hub 290 of the
first clamp member body 284. The annular flange 286 can have a lever opposing surface
291. The first clamp member body 284 can further include an inner hub 292 that defines
a first clamp member opening 294. The first clamp member opening 294 can be configured
to receive the spindle 226. An annular channel 296 can be formed between the outer
hub 290 and the inner hub 292. The annular channel 296 can have a terminal surface
298.
[0041] The lever 232 can generally include a lever body 300 having the user engagement portion
242 formed generally on a first end and the pivot portion 246 formed on an opposite
end. According to one example, the pivot portion 246 can generally include a pair
of lobes 302 that each define an axle passage similar to the axle passage 104 described
above with respect to Fig. 3. The lever body 300 can further include a pocket 308
having a flange opposing surface 310. A retainer plate 312 can be formed on the lever
body 100. The retainer plate 312 can be configured to rest on the annular flange 286
when the lever 232 is released. The pivot axle 248 can be configured to pass through
the respective axle passages of the lobes 302 and a corresponding axle passage 316
formed through an arm 318 extending from the housing 220.
[0042] The clamp arrangement 210 can additionally include a biasing member 320 and a washer
326. The biasing member 320 can be at least partially received by the annular channel
296 provided on the first clamp member body 284. The biasing member 320 can be generally
supported on an upper end by a washer 326 that is correspondingly supported by a flange
on the spindle 226. A distal end of the spindle 226 can be configured to attain a
press fit relationship (through the central opening 252) with the second clamp body
250.
[0043] With particular reference now to Fig. 32, the sixth accessory 14f will be described.
The sixth accessory 14f can generally be in the form of a cutting member having a
working portion 346 and an attachment portion 348. The attachment portion 348 can
include a plurality of mounting features 350 in the form of passages formed through
the sixth accessory 14f. The attachment portion 348 can further include an open-ended
aperture or throat 352 for selectively receiving a portion of the spindle 226 in an
assembled position as will be described herein. The plurality of mounting features
350 can be circular and have a diameter 358 of substantially about 2.8mm. The throat
352 can define an angle 360 of about 60°. Other dimensions are contemplated. It will
be appreciated however that the diameter 358 is selected to have a geometry such that
it will engage the tapered body portion 260 of the male conical protrusions 258 at
a location intermediate the terminal end 266 of the tip 262 and the second clamping
surface 254. More particularly, the diameter 358 has a geometry that will ensure the
attachment portion 348 does not bottom out or rest on top of the second clamping surface
254. In other words, the distance 280 (Fig. 30) must be greater than zero.
[0044] The mounting features 256 can be arranged to allow the sixth accessory 14f to be
indexed at about 30° increments around the second clamping surface 254. Like the mounting
features 76 described above, the mounting features 256 are absent at the two, four,
eight and ten o'clock positions. It is further appreciated that the clamp assembly
230 can be used to clamp other accessories, such as described herein. Other configurations
are contemplated.
[0045] With specific reference now to Figs. 30 and 34, an exemplary sequence of removing
the sixth accessory 14f from the clamp assembly 230 will be described. With initial
reference to Fig. 30, the clamp assembly 230 is shown in a closed position wherein
the biasing member 320 is supported on a first end by the washer 326 and provides
a downward biasing force onto the first clamp member 236 at the annular channel 296.
It is important to recognize that in the particular example shown, the second clamp
member 238 is fixed relative to the spindle 226. As shown, the male conical protrusions
258 selectively locate into the recesses of the mounting features 288 formed on the
first clamp member 236. The sixth accessory 14f therefore is clamped between the clamping
surface 287 and the outer surfaces 276 of the respective male conical protrusions
258. Again, the sixth accessory 14f is clamped at a location offset from the second
clamping surface 254 of the second clamp member 238. As viewed in Fig. 30, the lever
232 is shown and generally described herein as the first position. Because the sixth
accessory 14f is specifically engaged at the mounting features 350, the sixth accessory
14f can be securely fixed against the clamping surface 287 with minimal or no relative
movement between the sixth accessory 14f and the clamp assembly 230.
[0046] Turning now specifically to reference Fig. 34, the lever 232 is shown rotated from
the first position (phantom line) around the pivot axle axis 249 to a second position
(solid line). In the second position, the clamp assembly 230 is generally in the open
position where the first clamp member 236 is displaced or offset relative to the second
clamp member 238. In order to move the lever 232 from the first position (phantom
line, Fig. 34) to the second position (solid line, Fig. 34), a user can urge the user
engagement portion 242 (such as by pulling the user engagement portion 242 with an
index finger) in a direction generally upwardly as viewed in Fig. 34 and toward the
housing 220. In order to rotate the lever 232 around the pivot axle 248, a user must
overcome the biasing force of the biasing member 320 (Fig. 30). During rotation of
the lever 232 around the pivot axle 248, the flange opposing surface 310 and the pocket
308 of the lever body 300 generally transmits an upward force (in a direction against
the biasing force of the biasing member 320) onto the lever opposing surface 291.
In this regard, the lever 232 can generally lift the first clamp member 236 at the
annular flange 286 to move the clamping surface 287 away from the second clamp member
238.
[0047] With the clamp assembly 230 in the open position, the first and second clamp members
236 and 238, respectively, provide enough clearance, such that a user can remove the
sixth accessory 14f away from the clamp assembly 230. In one example, it may be necessary
to initially lift the sixth accessory 14f away from the male conical protrusions 258
before pulling the sixth accessory 14f away from the clamp assembly 230.
[0048] The pivot axle 248 can be located a distance 370 measured perpendicularly from a
point 372 on a longitudinal centerline of the spindle 226. In one example, the distance
370 can be long enough to give the user a mechanical advantage to comfortably overcome
the bias of the biasing member 320 when moving the lever 232 to the second position
(clamp assembly 230 open). A distance 374 measured between the point 372 and a plane
defined by the clamping surface 287 can be less than the distance 370.
[0049] With reference now to Figs. 35-38, another comparative clamp arrangement is shown
and generally identified at reference numeral 410. The clamp arrangement 410 is shown
operatively associated with a first power tool 412a and a second power tool 412b.
As will be described in detail herein, the clamp arrangement 410 includes a clamp
assembly 414 that is configured to be selectively and alternatively coupled to either
of the first power tool 412a or the second power tool 412b. The clamp assembly 414
is configured to selectively and alternatively retain various accessories such as
a seventh accessory 14g (Fig. 37). As will become appreciated from the following discussion,
the clamp assembly 414 is configured to suitably couple with an output member 416a
provided on the first power tool 412a or an output member 416b provided on the second
power tool 412b. In this regard, the output member 416a may include a first tool mating
detail 418a having a first mating geometry 420a. The output member 416b may incorporate
a second tool mating detail 418b having a second mating geometry 420b. In the example
shown, the first mating geometry 420a provided on the output member 416a includes
twelve circular shaped protrusions 422a. The second mating geometry 420b provided
on the output member 416b includes a male protrusion 422b. The male protrusion 422b
may alternatively comprise either of a four-point star or a hexagonal protrusion.
As will become appreciated herein, the clamp assembly 414 includes complementary geometry
suitable to selectively and alternatively mate with an output member 416a having a
male protrusion 422b in the form of a four-point star or a hexagon.
[0050] The first power tool 412a generally includes a tool body 430a having a housing 432a
that generally contains a motor 434a that drives the output member 416a. Similarly,
the second power tool 412b includes a tool body 430b having a housing 432b that contains
a motor 434b that drives the output member 416b. The output members 416a and 416b
of the respective first and second power tools 412a and 412b can be configured to
provide an oscillating motion.
[0051] The clamp assembly 414 generally includes an attachment plate 440 having a lever
442 pivotally coupled thereto. The clamp assembly 414 can generally include a first
clamp member 446 and a second clamp member 448 (Fig. 36). The lever 442 can include
a lever arm 450 that includes a user engagement portion 452. The lever 442 can further
include a pivot portion 454 having a pivot axle 456.
[0052] The second clamp member 448 can include a second clamp body 460 generally in the
form of a ring having a central opening 462. The second clamp body 460 can generally
comprise a second clamping surface 464 having a plurality of mounting features 466
formed thereon. In one example, the second clamp body 460 and the plurality of mounting
features 466 can be formed as a unitary, monolithic part, such as by precision cast
steel. In other examples, the plurality of mounting features 466 may be separately
formed and coupled to the clamp body 460. The second clamp member 448 may be configured
similarly to the second clamp member 238 described above. In this regard, the second
clamp member 448 may comprise eight protrusions or male conical portions that are
configured to each have a tapered body portion that generally tapers from the second
clamping surface 464 toward a tip.
[0053] The first clamp member 446 can generally include a first clamp member body 474 having
an annular flange 476. The first clamp member body 474 can include a clamping surface
478 that has a mounting feature 480 that is in the form of an annular recess that
cooperatively receive the corresponding plurality of mounting features 466 of the
second clamp member 448. The mounting feature 480 can have any configuration that
may cooperatively accept at least portions of the mounting features 466. The annular
flange 476 can generally extend radially from an outer hub 490 of the first clamp
member body 474. The annular flange 476 can have a lever opposing surface 492. The
first clamp member body 474 can further include an inner hub 494 that defines a first
clamp member opening 496. The first clamp member opening 496 can be configured to
receive a fastener 500. The fastener 500 can generally include a fastener head 502
and threads 504 formed on a distal end 506. The head 502 may incorporate an optional
flange 508. The threads 504 can be configured to threadably mate with a threaded bore
510a defined in the output member 416a (or a threaded bore 510b formed in the output
member 416b). In some examples, a cannulated sleeve 512 having a cannulation 514 may
be positioned between the fastener 500 and the first clamp member opening 496 of the
inner hub 494. The cannulated sleeve 512 can be fixed between the attachment plate
440 and the second clamp body 460. An annular channel 516 can be formed between the
outer hub 490 and the inner hub 494. The annular channel 516 can have a terminal surface
518. A biasing member 520 can be partially received by the annular channel 516. The
operation of the biasing member 520 is similar to that described above with respect
to the biasing member 120 (Figs. 4-6).
[0054] In general, the lever 442, first clamp member 446, and second clamp member 448 may
function similar to the configurations described above. However, with the clamp assembly
414 as described with respect to Figs. 35-38, the attachment plate 440 can be selectively
secured to various power tools including the first power tool 412a and the second
power tool 412b. The attachment plate 440 can generally include an attachment plate
body 530 that provides an attachment plate mating detail 532. The attachment plate
mating detail 532 can generally comprise a central recess 534 and a plurality of receiving
portions 536 formed thereon. In the example provided, the central recess 534 can be
generally defined by a keyed sidewall 540 defined into the body 530. Similarly, the
plurality of receiving portions 536 can be generally defined into the body 530 as
oval recesses 544. The keyed sidewall 540 can generally be in the form of a twelve-point
star. As can be appreciated, the oval recesses 544 can be configured to selectively
receive the protrusions 422a provided on the first mating geometry 420a of the first
power tool 412a. Notably, the oval recesses 544 are configured to suitably receive
circular shaped protrusions 422a of multiple tools having various diameters. Similarly,
the central recess 534 can be configured to cooperatively receive the male protrusion
422b (either the four-point star in one configuration, or the hexagon in another configuration)
provided by the second mating geometry 420b. In this regard, the attachment plate
440 may offer a user a variety of distinct mounting configurations for suitably coupling
the clamp assembly 414 to a wide range of power tools including the first and second
power tools 412a and 412b shown in Fig. 35. It will be further appreciated that the
interlocking geometries of the mating detail 532 of the attachment plate 440 and the
first and second tool mating details 418a and 418b of the first and second power tools
412a and 412b, respectively may take other shapes.
[0055] In one example of coupling the clamp assembly 414 to the first power tool 412a, a
user may initially align the attachment plate mating detail 532 with the first tool
mating detail 418a. In the example provided, the user may align the oval recesses
544 defined in the body 530 of the attachment plate 440 for receipt of the complementary
circular protrusions 422a extending from the first mating geometry 420a of the output
member 416a. As can be appreciated, once the protrusions 422a are selectively received
by the oval recesses 544 in the attachment plate 440, the clamp assembly 414 is rotationally
fixed with the output member 416a. Next, a user may advance the fastener 500 through
the cannulation 514 of the cannulated sleeve 512 and threadably advance the threads
504 into the threaded bore 510a defined in the output member 416a. In the example
provided, the head 502 can engage an outer surface 548 of the second clamp member
448. As can be appreciated, in the assembled position (Figs. 36-38), the clamp assembly
414 will be fixed for oscillating motion with the output member 416a of the first
power tool 412a. As shown in Figs. 37-38, the clamp assembly 414 may selectively accept
the accessory 14g similar to the clamp assembly 230 (Fig. 30) described above. Therefore,
the sequence will not be repeated here.
[0056] With reference now to Figs. 39-43, another comparative clamp arrangement is shown
and generally identified at reference numeral 610. The clamp arrangement 610 is shown
generally associated with the first power tool 412a (Fig. 40). As will be described
in detail herein, the clamp arrangement 610 includes a clamp assembly 614 that is
configured to be selectively coupled to the first or second power tools 412a and 412b.
Again, it will be appreciated that the clamp assembly 614 may incorporate additional
or alternative geometry for mating with other power tools such as those described
herein. The clamp assembly 614 is configured to selectively and alternatively retain
various accessories such as the seventh accessory 14g (Fig. 43). The clamp assembly
614 is configured to suitably couple with either of the output member 416a provided
on the first power tool 412a or the output member 416b provided on the second power
tool 412b.
[0057] The clamp assembly 614 generally includes an attachment plate 640 having a first
clamp member 646 and a second clamp member 648. The first clamp member 646 is configured
to translate relative to the second clamp member 648. The first clamp member 646 can
generally include a first clamp member body 674 having an annular flange 676. The
clamp assembly 614 is configured to operate similar to the clamp assembly 414 described
above but without the incorporation of a lever. In this regard, a user may engage
the annular flange 676 and translate the first clamp member body 674 toward the attachment
plate 640 against the bias of a biasing member 680 to move the first clamp member
646 from a clamped position (Fig. 43) to an unclamped position (Fig. 44).
[0058] The second clamp member 648 can include a second clamp body 682. The second clamp
body 682 can be generally formed similar to the second clamp body 460 described above
and will not be repeated here. The attachment plate 640 can generally include an attachment
plate body 684 that provides an attachment plate mating detail 686. The attachment
plate mating detail 686 can generally comprise a raised annular rim 688 having a central
recess 689 and a plurality of receiving portions 690 formed thereon. In the example
provided, the raised rim 688 incorporates twelve receiving portions 690 in the form
of oval recesses 692. As can be appreciated, the oval recesses 692 can be configured
to selectively receive the protrusions 422a provided on the first mating geometry
420a of the first power tool 412a. The central recess 689 can be a keyed sidewall
693 defined into the attachment plate body 684. The keyed sidewall 693 can generally
be in the form of a twelve-point star.
[0059] In one example of coupling the clamp assembly 614 to the first power tool 612a, a
user may initially align the attachment plate mating detail 686 defined in the body
684 of the attachment plate 640 for receipt of the complementary circular protrusions
422a extending from the first mating geometry 420a of the output member 416a. Once
the protrusions 422a are selectively received by the oval recesses 692 in the attachment
plate 640, the clamp assembly 614 is rotationally fixed with the output member 616a.
Next, a user may advance the fastener 500 through a cannulation 694 of a cannulated
sleeve 696 and threadably advance the threads 504 into the threaded bore 510a defined
in the output member 416a.
[0060] With reference now to Figs. 44-46, a further attachment assembly is shown and generally
identified at reference numeral 710. In general, the attachment assembly 710 generally
includes an adapter plate 712, a clamp plate 714, and a fastener 716. As will become
appreciated from the following discussion, the attachment assembly 710 may be configured
to cooperate with any of the clamping arrangements discussed above for coupling an
accessory, such as an accessory 14f to the clamp assembly 720 provided on a power
tool 722. Specifically, the attachment assembly 710 may be configured to suitably
connect to a second clamp member 726 of the clamp assembly 720 that may additionally
include a first clamp member 728.
[0061] The second clamp member 726 can generally include a raised central boss 730 that
can define flats 732 and 734 thereon. An opening 736 can also be formed through the
second clamp member 726. The first clamp member 728 may define a threaded aperture
740 therein. The adapter plate 712 can generally define an adapter plate body 742
having a central opening 744. The central opening 744 may be defined in part by a
radial sidewall 746 having diametrically opposed flats 748. The body 742 can additionally
include a plurality of outwardly extending protrusions 750 thereon. The clamp plate
714 can generally include a clamp plate body 754 that defines a central opening 756
therein. The fastener 716 may generally include a threaded shank 758 and a proximal
head 760. The head 760 can define a gripping detail 762. The exemplary gripping detail
762 is in the form of a hex recess, however other details may be incorporated.
[0062] In one example of coupling the attachment assembly 710 to the power tool 722, the
adapter plate 712 may be located onto the second clamp member 726. In this regard,
the opposing flats 748 of the adapter plate 712 can be rotationally aligned with the
corresponding flats 732 and 734 provided on the raised central boss 730 of the second
clamp member 726. The fastener 716 may then be inserted through the opening 756 of
the clamp plate 714 and through an opening 770 in the accessory 14f. The threaded
shank 758 can then be threadably advanced into the threaded aperture 740 defined in
the first clamp member 728 until the clamp plate 714 clamps the accessory 14f against
the adapter plate 712 (Fig. 48). As can be appreciated, the protrusions 750 extending
from the adapter plate body 742 can provide additional gripping onto the accessory
14f.
[0063] With reference now to Figs. 47-50, a further clamp arrangement is shown and generally
identified at reference numeral 810. The clamp arrangement 810 is shown generally
associated with a first output member 416a (Fig. 49) of the first power tool 412a
(Fig. 40). As will be described in detail herein, the clamp arrangement 810 includes
a clamp assembly 814 that is configured to be selectively coupled to the first or
second power tools 412a and 412b. Again, it will be appreciated that the clamp assembly
814 may incorporate additional or alternative geometry for mating with other power
tools such as those described herein. The clamp assembly 814 is configured to selectively
and alternatively retain various accessories such as the seventh accessory 14g (Figs.
49-50). In this regard, the clamp assembly 814 is configured to suitably couple with
either of the output member 416a provided on the first power tool 412a or the output
member 416b provided on the second power tool 412b.
[0064] The clamp assembly 814 generally includes an attachment plate 820 having a first
clamp member 822 movably coupled thereto. The first clamp member 822 can generally
include a first clamp member body 824 that defines a through bore 826 (Fig. 48), an
inset 828, a blind bore 830, and a radial channel 832 (Fig. 49). A fastener 500 can
include threads 504 that threadably mate with corresponding threads defined in the
output member 416a. The fastener 500 can therefore capture the clamp assembly 814
to the identified power tool.
[0065] The first clamp member 822 is configured to translate relative to a second clamp
member 838 as will become appreciated from the following discussion. The second clamp
member 838 can include a second clamp body 840. The second clamp body 840 can be generally
formed similar to the second clamp body 460 described above and will not be repeated
here. The attachment plate 820 can generally include an attachment plate body 844
that provides an attachment plate mating detail 846. The attachment plate mating detail
846 can generally comprise a raised annular rim 848 having a central recess 850 and
a plurality of receiving portions 852 formed thereon. In the example provided, the
raised rim 848 incorporates twelve receiving portions 852 in the form of oval recesses
854. The oval recesses 854 can be configured to selectively receive the protrusions
422a provided on the first mating geometry 420a of the first power tool 412a. Again,
the oval recesses 854 can cooperatively mate with protrusions 422a having various
diameters.
[0066] The central recess 850 can be a keyed sidewall 858 defined into the attachment plate
body 844. The keyed sidewall 858 can generally be in the form of a twelve-point star.
In the example provided, the attachment plate 820 further comprises a stem 860 extending
therefrom. The stem 860 can be integrally formed or coupled to the attachment plate
820 and to the second clamp member 838. The stem 860 defines a longitudinal axis 862.
A first series of ridges 864 can be formed around the stem 860. The first series of
ridges 864 can collectively define a first gripping detail 866. The first gripping
detail 866 can therefore be associated with, or fixed relative to, the second clamp
member 838.
[0067] With particular reference now to Figs. 48 and 49, additional features of the clamp
assembly 814 will be described. A first biasing member 870 can be located generally
around the stem 860 and configured for engaging the clamp member body 824 at the inset
828 on one end and the attachment plate 820 on an opposite end. In this regard, the
first biasing member 870 can provide a biasing force onto the clamp member body 824
in the direction of the second clamp member 838 or downwardly along the longitudinal
axis 862. A button 872 defines a button axis 873 and can be at least partially received
into the blind bore 830 of the clamp member body 824 against a bias of a second biasing
member 874. The button 872 includes a second series of ridges 878 that collectively
define a second gripping detail 880. In the example provided, the first and second
series of ridges 864, 878 comprise discontinuous, stepped radial ridges.
[0068] With reference now to Figs. 49 and 50, operation of the clamp assembly 814 according
to one example of the present teachings will be described. At the outset, it will
be appreciated that the first series of ridges 864 can cooperate with the second series
of ridges 878 for locating the button 872 at a desired location along the stem 860.
Explained in greater detail, the second biasing member 874 can provide a bias against
the button 872 forcing the button 872 in a direction rightward as viewed in Fig. 49
along the button axis 873. In this regard, the second gripping detail 880 of the second
series of ridges 878 on the button 872 are caused to mate and therefore cooperatively
lock with the first gripping detail 866 of the first series of ridges 864 on the stem
860. When an operator wishes to change the location of the clamp member body 824,
the button 872 can be depressed or translated in a direction leftward along the button
axis 873 against the bias of the second biasing member 874. In this regard, the first
series of ridges 864 and the second series of ridges 878 are caused to disengage whereby
the operator can subsequently translate the clamp member body 824 in a direction along
the axis 862 of the stem 860.
[0069] Once the desired elevation has been achieved, the operator can release the button
872 causing the respective first and second ridges 864 and 878 to lock. At this time,
the user can place the desired accessory between the first and second clamp members
822 and 838. Next, the user can again depress the button 872 allowing the first biasing
member 870 to direct the clamp member body 824 in a direction toward the accessory
14g until the accessory 14g is suitably clamped between the first and second clamp
members 822 and 838. It will be appreciated that the operator is not required to release
the button 872 to lock the clamp member body 824 at a displaced position from the
second clamp member 838 while inserting the accessory 14g.
[0070] With reference now to Figs. 51-54, a further clamp arrangement constructed in accordance
to another example, also not being part of the present invention, is shown and generally
identified at reference numeral 910. The clamp arrangement 910 is shown generally
associated with a first output member 416a (Fig. 53) of the first power tool 412a
(Fig. 40). As will become understood from the following discussion, the clamp assembly
910 includes a clamp assembly 914 that is configured to be selectively coupled to
the first or second power tools 412a and 412b. Again, it will be appreciated that
the clamp assembly 914 may incorporate additional or alternative geometry for mating
with other power tools such as those described herein. The clamp assembly 914 is configured
to selectively and alternatively retain various accessories such as the seventh accessory
14g (Figs. 53-54). In this regard, the clamp assembly 914 is configured to be suitably
coupled with either of the output member 416a provided on the first power tool 412a
or the output member 416b provided on the second power tool 412b.
[0071] The clamp assembly 914 generally includes an attachment plate 920 having a first
clamp member 922 movably coupled thereto. The first clamp member 922 can generally
include a first clamp member body 924 that defines a through bore 926 (Fig. 52), an
inset 928, a blind bore 930, and a radial channel 932. The first clamp member body
924 includes an annular flange 934. As will be described herein, the annular flange
934 can facilitate a gripping of the user onto the clamp member body 924. A fastener
500' can include threads 504' that threadably mate with corresponding threads defined
in the output member 416a. The fastener 500' can therefore capture the clamp assembly
914 to the identified power tool.
[0072] The first clamp member 922 is configured to translate relative to a second clamp
member 938 as will become appreciated from the following discussion. The second clamp
member 938 can include a second clamp member body 940. The second clamp body 940 can
be generally formed similar to the second clamp body 460 described above and will
not be repeated. The attachment plate 920 can generally include an attachment plate
body 944 that provides an attachment plate mating detail 946. The attachment plate
mating detail 946 can generally comprise a raised annular rim 948 having a central
recess 950 and a plurality of receiving portions 952 formed thereon. In the example
shown, the raised rim 948 incorporates twelve receiving portions 952 in the form of
oval recesses 954. The oval recesses 954 can be configured to selectively receive
the protrusions 422a provided on the first mating geometry 420a of the first power
tool 412a. Again, the oval recesses 954 can cooperatively mate with protrusions 422a
having various diameters.
[0073] The central recess 950 can be a keyed sidewall 958 defined into the attachment plate
body 944. The keyed sidewall 958 can generally be in the form of a twelve-point star.
In the example provided, the attachment plate 920 further comprises a stem 960 extending
therefrom. The stem 960 is shown separately formed from the attachment plate 920 and
to the second clamp member 938. However, it is contemplated that the stem 960 can
be integrally formed with the attachment plate 920. The stem 960 defines a longitudinal
axis 962. A first series of threads 964 can be formed around the stem 960. The first
series of threads 964 can collectively define a first gripping detail 966. The first
gripping detail 966 can therefore be associated with, or fixed relative to, the second
clamp member 938.
[0074] With particular reference now to Fig. 52, additional features of the clamp assembly
914 will be described. A first biasing member 970 can be located generally around
the stem 960 and configured for engaging the clamp member body 924 at the inset 928
on one end and the attachment plate 920 on an opposite end. In this regard, the first
biasing member 970 can provide a biasing force onto the clamp member body 924 and
the direction of the second clamp member 938 or downwardly along the longitudinal
axis 962. A button 972 defines a button axis 973 and can be at least partially received
into the blind bore 930 of the clamp member body 924 against a bias of a second biasing
member 974. The button 972 includes a second series of threads 978 that collectively
define a second gripping detail 980.
[0075] With particular reference now to Figs. 53 and 54, operation of the clamp assembly
914 will be described. At the outset, it will be appreciated that the first series
of threads 964 can threadably mate with the second series of threads 978 for locating
the button 972 at the desired location along the stem 960. Explained in greater detail,
the second biasing member 974 can provide a bias against the button 972 forcing the
button 972 in a direction rightward as viewed in Fig. 53 along the button axis 973.
In this regard, the second gripping detail 980 of the second series of threads 978
are caused to mate and therefore cooperatively lock with the first gripping detail
966 of the first series of threads 964 on the stem 960. When an operator wishes to
change the location of the clamp member body 924, the button 972 can be translated
in a direction leftward (as viewed in Fig. 52) along the button axis 973 against the
bias of the second biasing member 974. In this regard, the first series of threads
964 and the second series of threads 978 are caused to disengage whereby the operator
can subsequently translate the clamp member body 924 in a direction along the axis
962 of the stem 960. Once the desired elevation has been achieved, the operator can
release the button 972 causing the respective first and second series of threads 964
and 978 to lock. Alternatively, an operator may rotate the first clamp member body
924 in a direction generally around the longitudinal axis 962 causing the first clamp
member 922 to threadably advance along the first series of threads 964 to a desired
position.
[0076] At this time, the user can place the desired accessory between the first and second
clamp members 922 and 938. Next, the user can again depress the button 972 allowing
the first biasing member 970 to direct the clamp member body 924 in a direction toward
the accessory 14g until the accessory 14g is suitably clamped between the first and
second clamp members 822 and 838. Again, a user may alternatively rotate the first
clamp member body 924 to move the first clamp member 922 into a position that suitably
clamps the accessory 14g between the first and second clamp members 922 and 938, respectively.
Notably, in the configuration of the clamp assembly 914, a user can optionally further
rotate the clamp member body 924 in a direction around the axis 962 causing the first
and second series of thread portions 964 and 978 to engage whereby the user can further
translate the first clamp member body 924 toward the second clamp member 938. Such
a configuration may be particularly advantageous for aggressive applications where
it may be desired to provide an increased clamping force onto an accessory.
[0077] With reference now to Figs. 55 and 56, the clamp arrangement 910 is shown operatively
clamping an accessory 14b in the form of a sanding platen. The accessory 14b can be
suitably clamped between the first and second clamp members 922 and 938. Again, the
first clamp member body 924 can be rotated around the stem 960 to provide a tighter
clamping force onto the accessory 14b.
[0078] With reference now to Figs. 57-59 and 61-70, a clamp arrangement constructed in accordance
to an embodiment of the present invention is shown and generally identified at reference
numeral 1010. The clamp arrangement 1010 can be selectively and alternatively coupled
to various power tools such as the first or second power tools 412a and 412b described
above (Fig. 35). The clamp arrangement 1010 generally includes a clamp assembly 1014
that may be configured to selectively and alternatively retain various accessories
such as the seventh accessory 14g (Fig. 43).
[0079] Referring to Fig. 58, the clamp assembly 1014 generally includes a first clamp member
1020, a second clamp member 1022, an attachment plate 1024, a stem 1030, a cam body
1032, a biasing member 1034, and a fastener 1040. As will be appreciated from the
following discussion, the first clamp member 1020 is configured to translate along
an axis 1042 of the fastener 1040 relative to the second clamp member 1022 upon rotation
of the first clamp member 1020. In this regard, rotation of the first clamp member
1020 in a first direction can cause the first clamp member 1020 to translate toward
the second clamp member 1022 into a closed or clamped position (Figs. 59 and 68).
Similarly, rotation of the first clamp member 1020 in a second, opposite direction
can cause the first clamp member 1020 to translate away from the second clamp member
1022 into a fully open or unclamped position (Figs. 57 and 70).
[0080] With particular reference to Figs. 58 and 62, the first clamp member 1020 can include
a first clamp member body 1050 that generally includes an outer ribbed gripping surface
1052, an upper recess 1053 (Fig. 68), a lower recess 1054 (Fig. 62), a central opening
1056, a cam follower body 1060, and a clamping surface 1062. The gripping surface
1052 can further include a double-ended arrow identifier 1066 that points in directions
generally transverse to the axis 1042 to indicate to the user that the first clamp
member body 1050 is configured to be rotated around the axis 1042. The lower recess
1054 can be sized to receive the cam body 1032 (see also Figs. 68-70). The lower recess
1054 can also be sized to at least partially receive portions of the second clamp
member 1022 in the closed or clamped position (Fig. 68). The upper recess 1053 can
receive a portion of the biasing member 1034. In one configuration, the biasing member
can be mounted for compression between the attachment plate 1024 and a terminal end
1068 of the upper recess 1053.
[0081] The cam follower body 1060 can generally include a plurality of cam pawls 1070. As
will be described below, the cam pawls 1070 of the cam follower body 1060 are configured
to slidably negotiate along features of the cam body 1032 to influence the first clamp
member body 1050, and therefore the first clamp member 1020, to translate along the
axis 1042 (Fig. 57) relative to the second clamp member 1022.
[0082] With particular reference now to Figs. 58, 61, and 63, the cam body 1032 will be
described in greater detail. The cam body 1032 generally includes a plurality of cam
ramps 1074 that are positioned between respective cam valleys and cam plateaus 1076
and 1078. Each of the cam plateaus 1078 can further include a cam stop 1080 formed
thereon. The cam body 1032 can further include an opening 1082 therein. The cam body
1032 can further include a planar mounting surface 1084 (Fig. 66) that, together with
the opening 1082, is configured to provide a keyway for non-rotatably receiving the
stem 1030. As can be appreciated, the cam pawls 1070 of the cam follower body 1060
are configured to slidably negotiate around the respective cam ramps 1074 between
the cam plateaus 1078 (corresponding to the clamp assembly 1014 being in an open position
Fig. 70) and a position on or near the cam valleys 1076 (corresponding to the clamp
assembly 1014 being in a closed or clamped position, Fig. 68). It will be appreciated
that while three cam pawls 1070 and cam ramps 1074 have been incorporated on the clamp
assembly 1014, other configurations are contemplated.
[0083] Referring now to Figs. 58 and 68-70, the stem 130 will be further described. The
stem 130 generally includes a cylindrical body 1090 that defines a throughbore 1092.
The stem 1030 further includes a flat 1094 (Fig. 58) formed on the body 1090. The
flat 1094 incorporates a ledge 1096 at a terminal end thereof. The stem 1030 further
includes a distal seat 1100 and a proximal seat 1102. The second clamp member 1022
can be fixedly and non-rotatably secured to the stem 1030 at the distal seat 1100.
Similarly, the attachment plate 1024 can be fixedly and non-rotatably secured to the
stem 1030 at the proximal seat 1102. The planar mounting surface 1084 (Fig. 66) of
the cam body 1032 can locate against the flat 1094 such that the cam body 1032 is
non-rotatably fixed to the stem 1030 at the ledge 1096. It is appreciated that once
assembled, the cam body 1032 is further precluded from translating along the stem
1030.
[0084] The second clamp member 1022 can include a second clamp member body 1110 having a
plurality of mounting features 1112 extending therefrom. The mounting features 1112
can be generally in the form of male conical protrusions such as the male conical
protrusions 258 described in detail above with respect to Fig. 31. According to one
example, the male conical protrusions of the mounting features 1112 can be configured
to engage apertures of an accessory. By way of example, the mounting features 1112
can be configured to engage apertures of the sixth accessory 14f at a position intermediate
the terminal end of the tips and a second clamp surface 1114 on the second clamp member
1022 such as described above with respect to Fig. 30.
[0085] With particular reference now to Fig. 59, the attachment plate 1024 can generally
include an attachment plate body 1140 that provides an attachment plate mating detail
1142. The attachment plate mating detail 1142 can generally comprise an annular rim
1144 having a central recess 1146 and a plurality of receiving portions 1148 formed
thereon. In the example provided, the rim 1144 incorporates twelve receiving portions
1148 in the form of oblong recesses that extend into and connect with the central
recess 1146. As can be appreciated, the oblong recesses can be configured to selectively
receive protrusions provided on a first power tool (such as the first power tool 412a,
Fig. 35). Alternatively, the central recess 1146 can be configured to receive the
corresponding mating geometry of a second power tool (such as the second power tool
412b, Fig. 35).
[0086] In one example of coupling the clamp arrangement 1010 to a first power tool (such
as the first power tool 412a, Fig. 35), a user may initially align the attachment
plate mating detail 1142 defined in the attachment plate body 1140 for receipt of
the complementary circular protrusions (such as protrusions 422a, Fig. 35). Once the
protrusions of the power tool are selectively received by the receiving portions 1148
in the attachment plate 1140, the clamp assembly 1014 is rotationally fixed with the
output member of the tool. Next, a user may advance the fastener 1040 through the
throughbore 1092 defined through the stem 1030. The fastener 1040 can be fixedly coupled
to the output member of the tool such as by threads formed on a distal end of the
fastener 1040 (not specifically shown). Fig. 60 illustrates a clamping arrangement
1010'. The clamping arrangement 1010' is constructed similar to the clamping arrangement
1010 described above except an attachment plate 1024' provides a mating detail 1142'
that includes a plurality of receiving portions 1148' that do not intersect with a
central recess 1146'. The mating detail 1142' may be constructed similar to the mating
detail 686 described above and shown in Fig. 40.
[0087] With specific reference now to Figs. 68, 70, operation of the clamp assembly 1014
according to one example of the present disclosure will now be described. As can be
appreciated, the biasing member 1034 normally biases the first clamp member 1020 toward
and into engagement with the second clamp member 1022. To move the first clamp member
1020 from the closed position (Fig. 68) toward an open position (Fig. 70), a user
can rotate the first clamp member 1020 in a first direction (counter-clockwise as
viewed in Fig. 58). Rotation of the first clamp member 1020 in the first direction
will cause the respective cam pawls 1070 to slidably negotiate from a position generally
on or adjacent to the cam valleys 1076 on the cam body 1032 along the cam ramps 1074
(Fig. 61). As the cam body 1032 is fixed relative to the stem 1030, the cam pawls
1070 ride up the respective cam ramps 1074 thereby causing the first clamp member
1020 to move away from the second clamp member 1022 (or in a direction up as viewed
from Fig. 68 to Fig. 78). The first clamp member 1020 can continue to rotate until
the cam pawls 1070 locate onto the respective cam plateaus 1078 (Fig. 61) on the cam
body 1032. Engagement of the respective cam pawls 1070 with the cam stops 1080 will
preclude further rotation of the first clamp member 1020 conveying to a user that
the first clamp member body 1050 has reached a fully open position (Fig. 70). With
the clamp assembly 1014 in the open position, a user may insert or replace an accessory.
In this regard, once the desired accessory has been located between the first and
second clamp members 1020 and 1022, respectively, a user can rotate the first clamp
member body 1050 in a second opposite direction (clockwise as viewed in Fig. 58).
Rotation of the first clamp member body 1050 in the second direction will cause the
cam pawls 1070 to ride down the respective cam ramps 1074 to a position that allows
an accessory to be clamped between the mounting features 1112 and the clamping surface
1062 of the first clamp member 1020. Again, the biasing member 1034 will tend to facilitate
and encourage movement of the cam pawls 1070 down the cam ramps 1074 and into a clamping
position.
[0088] With reference now to Figs. 71 and 72, a clamp arrangement constructed in accordance
to another example of the present disclosure is shown and generally identified at
reference numeral 1210. The clamp arrangement 1210 can be selectively and alternatively
coupled to various power tools such as the first or second power tools 412a and 412b
described above (Fig. 35). The clamp arrangement 1210 generally includes a clamp assembly
1214 that may be configured to selectively and alternatively retain various accessories
such as described herein. Unless otherwise described, the clamp assembly 1214 may
be constructed similar to the clamp assembly 1014 described above. Therefore, the
description and operation of the clamp assembly 1214 will not be repeated here.
[0089] The clamp arrangement 1210 generally includes an attachment plate 1224 and a floating
adapter plate 1226. As will be described herein, the floating adapter plate 1226 can
be optionally incorporated between the attachment plate 1224 and an identified tool
when it is desired to rotate the orientation of the clamp assembly 1214 relative to
the tool. The attachment plate 1224 can generally include an attachment plate body
1230 that provides an attachment plate mating detail 1232. The attachment plate mating
detail 1232 can generally comprise a central recess 1234 and a plurality of receiving
portions 1238 arranged therearound. The central recess 1234 can be further defined
by a keyed sidewall 1240 defined into the body 1230. The keyed sidewall 1240 can generally
be in the form of a twelve-point star. The plurality of receiving portions 1238 can
be generally defined into the body 1230 as oval recesses 1242. The oval recesses 1242
can be configured to selectively receive the protrusions 422a (Fig. 35) provided on
the first mating geometry 420a of the first power tool 412a. Alternatively, and as
will be described below, the oval recesses 1242 can be configured to receive protrusions
1250 (Fig. 72) extending from the floating adapter plate 1226.
[0090] The floating adapter plate 1226 can generally include a floating adapter plate body
1260 that provides an upper mating detail 1262 (Fig. 71) and a lower mating detail
1264 (Fig. 72). The upper mating detail 1262 can generally comprise a central recess
1274 and a plurality of receiving portions 1276. In the example provided, the central
recess 1274 can be generally defined by a keyed sidewall 1280 defined into the body
1260. The keyed sidewall 1280 can be generally in the form of a twelve-point star.
The plurality of receiving portions 1276 can be generally defined into the body 1260
as oval recesses 1282. The lower mating surface 1264 includes the protrusions 1250.
Of note, when the floating adapter plate 1226 is assembled between the adapter plate
1224 and the identified power tool, the protrusions 1250 on the floating adapter plate
1226 are received into the receiving portions 1238. The orientation of the receiving
portions 1276 on the floating attachment plate 1226 are rotated relative to the receiving
portions 1238 on the attachment plate 1224. As a result, the orientation of the clamp
member 1214 (and the resulting accessory) can be rotated around a central axis 1290
relative to the power tool a predetermined amount. In the example provided, the receiving
portions 1238 of the attachment plate 1230 are rotatably offset about fifteen degrees
relative to the receiving portions 1276 in the floating adapter plate 1226. Other
configurations are contemplated.
[0091] With reference now to FIGS. 73 and 74, a clamp arrangement constructed in accordance
to another example of the present disclosure is shown and generally identified at
reference numeral 1310. The clamp arrangement 1310 can be selectively and alternatively
coupled to various power tools such as the first or second power tools 412a and 412b
described above (Fig. 35). The clamp arrangement 1310 generally includes a clamp assembly
1314 that may be configured to selectively and alternatively retain various accessories
such as described herein. Unless otherwise described, the clamp assembly 1314 may
be constructed to the clamp assembly 1014 described above. Therefore, the description
and operation of the clamp assembly 1314 will not be repeated here.
[0092] The clamp arrangement 1310 generally includes an attachment plate 1324 and a floating
adapter plate 1326. As will be described herein, the floating adapter plate 1326 can
be optionally incorporated between the attachment plate 1324 and an identified tool
when it is desirable to provide a different mating detail. The attachment plate 1324
can generally include an attachment plate body 1330 that provides an attachment plate
mating detail 1332. The attachment plate mating detail 1332 can generally comprise
an elongated slot 1334 and a pair of female arcuate slots 1336 formed into the body
1330. In one example, the configuration of the mating detail 1332 can cooperatively
mate with the first mating detail 420a (Fig. 35) of the first power tool 412a. Other
configurations are contemplated. When it may be desirable to mate with the second
mating geometry 420b (Fig. 35) of the second power tool 412b, the floating adapter
plate 1326 may be positioned between the attachment plate 1324 and the second power
tool 412b.
[0093] The floating adapter plate 1326 can generally include a floating adapter plate body
1360 that provides an upper mating detail 1362 (Fig. 73) and a lower mating detail
1364 (Fig. 74). The upper mating detail 1362 can generally comprise a central recess
1374 that defines a keyed sidewall 1380 defined into the body 1360. The keyed sidewall
1380 can generally be in the form of a twelve-point star. The upper mating detail
1362 can be configured to selectively mate with the second mating geometry 420b of
the second power tool 412b (Fig. 35). The lower mating surface 1364 includes male
arcuate protrusions 1390 that are configured to be selectively received by the female
arcuate slots 1336 (Fig. 73) provided in the adapter plate 1324. The interaction of
the male arcuate protrusions 1390 on the floating adapter plate 1326 with the female
arcuate slots 1336 on the adapter 1324 non-rotatably fixes the attachment plate 1324
to the floating adapter plate 1326.
[0094] Referring now to FIG. 75, an attachment plate constructed in accordance to additional
features of the present disclosure is shown and generally identified at reference
numeral 1424. The attachment plate 1424 can be used in place of any of the attachment
plates described above. The attachment plate 1424 can generally include an attachment
plate body 1440 that provides an attachment plate mating detail 1442. The attachment
plate mating detail 1442 can generally comprise a plurality of generally pie-shaped
protrusions 1444 that cooperate to form a central recess 1446. Each of the pie-shaped
protrusions 1444 includes a pair of converging flats 1445. The flats 1445 can be used
to engage and rotatably fix to a corresponding structure extending from a given power
tool. A plurality of grooves 1450 are defined on the attachment plate body 1440 between
adjacent pie-shaped protrusions 1444. The protrusions 1444, the flats 1445, the central
recess 1446 and the grooves 1450 can individually or in combination interface with
various attachment details provided on various power tools such as those disclosed
herein.
[0095] Referring now to FIG. 76, an attachment plate constructed in accordance with additional
features of the present disclosure is shown and generally identified at reference
numeral 1456. The attachment plate 1456 can be substituted for any of the attachment
plates described above. The attachment plate 1456 can generally include an attachment
plate body 1458 that provides an attachment plate mating detail 1462 and a central
aperture 1474. The attachment plate mating detail 1462 can generally comprise a raised
annular rim portion 1460 having a plurality of radially spaced arcuate recesses 1468a-d
formed therein which are separated by a pair of elongated radially extending grooves
1464 and 1466. In the example provided, the grooves 1464 and 1466 extend perpendicular
to each other and join a central recess area 1470 immediately surrounding the aperture
1474. In this embodiment of the attachment plate 1456 the outer radial ends of the
grooves 1464 and 1466 are closed and therefore do not extend entirely to the outer
periphery of the attachment plate body 1458. The raised rim 1460, the arcuate recesses
1468, and the grooves 1464, 1466 can individually or in combination provide a torque
transferring interface with various attachment details provided on various power tools
such as those disclosed herein.
[0096] Referring now to FIG. 77, an attachment plate constructed in accordance with additional
features of the present disclosure is shown and generally identified at reference
numeral 1550. The attachment plate 1550 can be substituted for any of the attachment
plates described above. The attachment plate 1550 can generally include an attachment
plate body 1540 that provides an attachment plate mating detail 1562 similar to the
mating detail 1462 of the attachment plate 1456 shown in Fig. 76. In particular, the
attachment plate mating detail 1562 can generally comprise a raised annular rim portion
1560 having a plurality of radially spaced arcuate recesses 1568a-d formed therein
which are separated by a pair of elongated radially extending grooves 1564 and 1566.
The grooves 1564 and 15666 are arranged perpendicular to each other and extend from
a central recess area 1570 surrounding the central aperture 1574. In this embodiment
of the attachment plate 1550, the radial grooves 1564 and 1566 extend to the outer
periphery of the attachment plate body 1540. The raised rim portion 1560, the receiving
portions 1568a-d, and the radial grooves 1564, 1566 can individually or in combination
interface with various attachment details provided on various power tools such as
those disclosed herein.
[0097] In this regard, the attachment plate mating detail 1562 (as well as the mating detail
of the various other attachment plates disclosed herein) is suitable for engaging
not only the tool mating details 418a and 418b (Fig. 35) described above, but other
tool mating details provided by other manufacturers including but not limited to Fein,
Sears (Craftsman), Rockwell, Dremel, Bosch, Milwaukee, Master Mechanic, and Ridgid.
[0098] With reference now to Fig. 78, a clamp arrangement constructed in accordance to another
example of the present disclosure is shown and generally identified at reference numeral
1610. The clamp arrangement 1610 is similar to the clamp arrangement 1010 shown in
Fig. 58 and generally includes a first clamp member 1620, and a second clamp member
1622. The first clamp member 1620 generally includes an outer ribbed gripping surface
1652 for enabling a user to rotate the first clamp member 1620 against the bias of
spring 1634 to raise the first clamping member 1620 relative to the second clamping
member 1622 into the open position shown in Fig. 78. A flange 1660 is provided adjacent
the lower end of the first clamping member 1620 to prevent the user from potentially
pinching his fingers when the clamping arrangement 1610 is closed.
[0099] The second clamp member 1622 can include a plurality of mounting features 1612 extending
therefrom. The mounting features 1612 can preferably be in the form of male tapered
conical protrusions configured and arranged as described above in connection with
Fig. 31. By way of example, the mounting features 1612 can be configured to engage
apertures of the sixth accessory 14f at a position intermediate the terminal end of
the tips and a second clamp surface 1614 on the second clamp member 1622 such as described
above with respect to Fig. 30.
[0100] The foregoing description of the embodiments has been provided for purposes of illustration
and description. It is not intended to be exhaustive. Individual elements or features
of a particular embodiment are generally not limited to that particular embodiment,
but, where applicable, are interchangeable and can be used in a selected embodiment,
even if not specifically shown or described.