TECHNOLOGICAL FIELD
[0001] The present disclosure generally relates to luggage. More particularly, the present
disclosure relates to zipper configurations for expandable luggage.
BACKGROUND
[0002] Luggage items, such as suitcases, backpacks, duffel bags, briefcases, computer bags
and so on, often include a primary opening/closing zipper to allow a user to access
an inner compartment of the luggage item. The luggage item may also include an expansion
zipper and a gusset for increasing the storage space of the luggage item. Each of
the zipper halves of the expansion zipper is attached to an opposing side of the gusset.
When the expansion zipper is zipped, the gusset is kept underneath the expansion zipper
on the interior thereof. When the expansion zipper is unzipped, the gusset connected
between the zipper halves of the expansion zipper expands and forms a portion of the
luggage item, thereby increasing a storage space of the luggage item.
[0003] An expansion zipper of a luggage item is usually arranged along side and/or top panels
or portions thereof of the luggage item, and is often configured to be positioned
side-by-side with the primary opening/closing zipper along the side and/or top panels
of the luggage item. Such configuration can be confusing to a user, especially when
the expansion zipper is zipped. A user may mistake the primary opening/closing zipper
for the expansion zipper, or vice versa. Moreover, the expansion zipper takes extra
space along a depth dimension of the luggage item. Accordingly, panels or shells used
for making non-expandable luggage cases that meet the size restrictions specified
by airline companies may not be used for making expandable luggage cases due to the
extra depth added by the expansion zipper. Any dimensional adjustment involved may
result in additional cost in luggage design and manufacture.
[0004] Documents that may be related to the present disclosure in that they include various
approaches to luggage zipper configurations include
EP 1638427,
EP 1689263,
FR 2951915 (
WO 2010122247),
GB 2173393,
TWM339233,
US 2002148743,
US 2007267262,
US 6609598,
US 7255145 and
WO 2011093984. These proposals, however, may be improved.
[0005] It is therefore desirable to provide an improved luggage closure arrangement which
addresses the above described problems and/or which more generally offers improvements
or an alternative to existing arrangements.
SUMMARY
[0006] According to the present invention there is therefore provided a luggage item as
described in the accompanying claims.
[0007] In particular described herein is a zipper configuration for use in expandable luggage
items, such as soft side suitcases, hard side suitcases, hybrid suitcases, backpacks,
duffels, briefcases, computer bags and so on. The luggage item may include opposing
portions and a zipper configuration for expandability.
[0008] In some examples, the zipper configuration may include a first zipper mechanism and
a second zipper mechanism. The first zipper mechanism may operably engage a peripheral
edge of each of the opposing portions of the luggage item and may be configured to
selectively zip and unzip. The second zipper mechanism may operably engage a peripheral
edge of each of the opposing portions of the luggage item and may be configured to
selectively zip and unzip. The first zipper mechanism and the second zipper mechanism
may be arranged in a superimposed or overlapping or overlying or coextensive configuration.
The first and second zipper mechanisms may be configured to zip and unzip independent
of each other. The second zipper mechanism may include a gusset. The gusset may connect
the second zipper mechanism and one of the peripheral edges of the opposing portions
to thereby operably engage the peripheral edge of the opposing portion. The opposing
portions of the luggage item may be maintained in a closed unexpanded configuration
when the first zipper mechanisms is zipped, and may be maintained in a closed and
expanded configuration when the second zipper mechanisms is zipped.
[0009] In some examples, the first zipper mechanism may include opposing longitudinal edges,
and the second zipper mechanism may include opposing longitudinal edges. One of the
opposing longitudinal edges of the first zipper mechanism and one of the opposing
longitudinal edges of the second zipper mechanism may operably engage one of the peripheral
edges of the opposing portions. The other of the opposing longitudinal edges of the
first zipper mechanism and the other of the opposing longitudinal edges of the second
zipper mechanism may operably engage the other of the peripheral edges of the opposing
portions.
[0010] In some examples, the gusset and one of the first or second zipper mechanisms may
be arranged in an aligned configuration.
[0011] In some example, the gusset may define at least in part a wedge shape.
[0012] In some examples, one of the first or second zipper mechanisms may be configured
to be exterior to the other of the first or second zipper mechanisms.
[0013] In some examples, the first zipper mechanism may define a row of engaged first zipper
teeth, and the second zipper mechanism may define a row of engaged second zipper teeth.
[0014] In some examples, the first zipper teeth and the second zipper teeth may be longitudinally
and/or vertically aligned. In some examples, the first zipper teeth and the second
zipper teeth may not be longitudinally or vertically aligned.
[0015] In some examples, the first zipper mechanism may further include at least one first
zipper slider movable along the first zipper teeth. The second zipper mechanism may
further include a second zipper slider movable along the second zipper teeth.
[0016] In some examples, the at least one first zipper slider and the at least one second
zipper slider may be configured to zip and unzip in a same direction or in opposite
directions.
[0017] In some examples, at least one of the first and second zipper mechanisms may further
include an additional oppositely directed zipper slider.
[0018] In some examples, the luggage item may further include a luggage lock. The luggage
lock may be configured to selectively restrict movement of at least one of the at
least one first zipper slider and/or the at least one second zipper slider along the
respective zipper teeth.
[0019] In some examples, the luggage item may further include a hinge element preferably
having a width dimension.
[0020] In some examples, the width dimension of the hinge element may be preferably configured
to be similar to a width dimension of the gusset. In some examples, the width dimension
of the hinge element may be preferably configured to be similar to a width dimension
of one of the first or second zipper mechanisms.
[0021] In some examples, the luggage item may include at least one portion at least in part
defined by a relatively rigid shell.
[0022] In some examples, the luggage item may include at least one portion at least in part
defined by a relatively flexible structure.
[0023] In some examples, the luggage item may further include an additional gusset. The
second zipper mechanism may define two zipper halves. Each of the gussets may be positioned
between one of the two zipper halves of the second zipper mechanism and respective
opposing portions of the luggage item.
[0024] In some examples, the luggage item may be a suitcase, or backpack, or briefcase,
or duffle or computer bag.
[0025] In some examples, the opposing portions of the luggage item may define opposing housing
portions of a suitcase, or opposing top openings of a backpack, or briefcase, or duffle
or computer bag.
[0026] This summary of the disclosure is given to aid understanding, and one of skill in
the art will understand that each of the various aspects and features of the disclosure
may advantageously be used separately in some instances, or in combination with other
aspects and features of the disclosure in other instances.
BRIEF DESCRIPTION OF THE DRAWINGS
[0027] The present invention will now be described by way of example only with reference
to the following figures in which:
[0028] Fig. 1 is a perspective view of a luggage case in an unexpanded state, incorporating
a zipper configuration that allows for expandability.
[0029] Fig. 2 is a perspective view of the luggage case shown in Fig. 1 in an expanded state.
[0030] Fig. 3 is a perspective view of the luggage case shown in Fig. 1 in an open state.
[0031] Fig. 4A is a representative cross section view of a top portion of the unexpanded
luggage case shown in Fig. 1, viewed along line 4-4 in Fig. 1, with an outer zipper
zipped, and an inner zipper unzipped.
[0032] Fig. 4B is representative cross section view similar to that of Fig. 4A, with the
outer zipper zipped and the inner zipper zipped.
[0033] Fig. 5 is a representative cross section view of a side portion incorporating a hinge
element of the unexpanded luggage case shown in Fig. 1, viewed along line 5-5 in Fig.
1.
[0034] Fig. 6 is a representative cross section view of a top portion of the expanded luggage
case shown in Fig. 2, viewed along line 6-6 in Fig. 2, showing the inner zipper zipped
and the outer zipper unzipped.
[0035] Fig. 7 is a representative cross section view of a side portion incorporating the
hinge element of the expanded luggage case shown in Fig. 2, viewed along line 7-7
in Fig. 2.
[0036] Fig. 8A is a perspective view of a luggage case in an expanded state, incorporating
a second example of a zipper configuration that allows for expandability.
[0037] Fig. 8B is a perspective view of a luggage case in an expanded state, incorporating
a third example of a zipper configuration that allows for expandability.
[0038] Fig. 9 is a representative cross section view of a portion similar to that shown
in Fig. 6 of a luggage case in an expanded state, incorporating a fourth example of
a zipper configuration that allows for expandability.
[0039] Fig. 10 is a representative cross section view, similar to Fig. 4A, of a portion
of a luggage case in an unexpanded state, incorporating a fifth example of a zipper
configuration that allows for expandability.
[0040] Fig. 11 is a representative cross section view of a portion similar to that shown
in Figs. 6 and 9 of a luggage case in an expanded state, incorporating a sixth example
of a zipper configuration that allows for expandability.
[0041] Fig. 12 is a plan view of a portion of a luggage case in an expanded state, incorporating
a luggage lock and the first example of the zipper configuration that allows for expandability.
[0042] Fig. 13 is a plan view of a portion of a luggage case in an expanded state, incorporating
a luggage lock and a seventh example of a zipper configuration that allows for expandability.
DETAILED DESCRIPTION
[0043] Described herein is a dual closure mechanism for use in expandable luggage items,
such as soft side suitcases, hard side suitcases, hybrid suitcases, backpacks, duffels,
briefcases, computer bags, or any luggage items that may desire expandability. The
luggage item may include a housing compartment enclosed by opposing housing portions
separable in part by a closure mechanism, such as a zipper mechanism. The opposing
housing portions used herein may refer to a front panel and a rear panel (such as
the relatively flexible or soft panels used for soft side suitcases), or a front shell
and a rear shell (such as the relatively rigid shells used for hard side suitcases),
or a combination of a relatively flexible structure and a relatively rigid structure
that collectively define the body of the luggage item, or any two portions of the
luggage item body separable by the closure mechanism (such as the zipped top opening
of a backpack, duffle, computer bags, and so on).
[0044] By way of example and without limitation, Fig. 1 shows a luggage case 100 incorporating
a dual closure mechanism that allows for expandability in a closed and unexpanded
configuration. Fig. 2 shows the luggage case 100 incorporating the dual closure mechanism
that allows for expandability in an expanded state. The luggage case 100 may include
a main housing compartment having two opposing housing portions, for example without
limitation, a front shell 102 and a rear shell 104, forming in general a parallelepiped
shape defining an interior compartment for receiving items. The inner compartment
of the luggage case 100 may include inner liners 106, 108, interior pockets 110, dividers
112 that may divide the inner compartment into multiple sub-compartments, clips 114,
hooks, hangers, clothes straps 116 and so on.
[0045] With continuing reference to Figs. 1 and 2, each of the front and rear shells 102,
104 may include a major face panel 118, 120, a top panel 122, 124, a bottom panel
126, 128, a left panel 130, 132 and a right panel 134, 136. Each of the top, bottom,
left and right panels 122, 124, 126, 128 130, 132, 134, 136 defines a peripheral edge
or rim 138, 140, respectively, to which a hinge element 142 and a closure mechanism
are operably configured. In the example shown in Fig. 1, the front shell 102 and the
rear shell 104 are pivotally connected to each other along peripheral edge portions
138, 140 of their respective left panels 130, 132 by a fabric hinge 142. Other types
of hinge elements are contemplated, such as but not limited to a continuous piano
hinge, or a pair of spaced-apart discrete hinges.
[0046] The luggage case 100 may include four wheel assemblies 144, such as swivel casters
or fixed axle wheels, attached to the main housing compartment adjacent to the corners
of the bottom panels 126, 128 of the front and rear shells 102, 104 to assist a user
in moving the luggage case 100 along a support surface. In some examples, the luggage
case 100 may include less than four wheel assemblies 144. The luggage case 100 may
include a combination of wheel assemblies 144 and feet or other supports. Feet 145
may also be positioned on one or more sides of the luggage case 100 to allow the luggage
case 100 to be supported on, but spaced above, a support surface, such as the ground.
The luggage case 100 may include a telescopic handle 146 to pull or push the luggage
case 100. The luggage case 100 may further include one or more carry handles 148 to
lift or otherwise move the luggage case 100.
[0047] The luggage case 100 may include a security lock 150 that in one example is located
at the front top panel 122 of the luggage case 100. Other locations may be suitable.
The security lock 150 may selectively engage zipper pull tabs 152, 154 associated
with zipper sliders of a closure mechanism of the luggage case 100, thereby restricting
the movement of the zipper sliders along a zipper track of the closure mechanism.
Accordingly, a user may use the security lock 150 to restrict access by others to
an enclosed inner compartment of the luggage case 100 by securing the zipper pull-tabs
152, 154 of the closure mechanism to the security lock 150.
[0048] Referring to Fig. 4A, the luggage case 100 may include a gusset 156. When the luggage
case 100 is a closed and unexpanded configuration (See Fig. 1), the gusset 156 may
be collapsed inside the luggage case 100. When the luggage case 100 is in a closed
but expanded configuration (See Fig. 2), the gusset 156 expands and forms a portion
of the exterior of the luggage case 100 thereby increasing the overall volume of the
inner compartment of the luggage case 100 in accordance with the width of the gusset
156. The gusset 156 may be a single-layer construction or multiple-layer construction.
In some examples, the gusset 156 may include an outer layer 158 and an inner layer
160. The outer layer 158 of the gusset 156, or if of a single-layer construction,
may be formed of material similar to those used for forming the outer cover of soft
side luggage case 100 including, but not limited to, natural or man-made woven or
non-woven fabrics, or natural materials, such as leather. The inner layer 160 of the
gusset 156 may be formed of material similar to those used for forming inner liners
of a luggage case 100, such as polyester or other natural or synthetic fabric. In
some examples, the gusset 156 may define in general a rectilinear shape having a constant
width along its length dimension (Figs. 2 and 3). In some examples, the gusset 156',
156" may define in part a wedge shape having two tapered ends 162, 163 (Figs. 8A and
8B).
[0049] With reference to Figs. 1, 2, 3, 4A, 4B and 6, the dual closure mechanism that allows
for expandability of the luggage case 100 is described in more detail. The dual closure
mechanism is operably associated with the peripheral rim or edge portion 138 of the
front shell 102 and the peripheral rim or edge portion 140 of the rear shell 104.
The dual closure mechanism may selectively secure the peripheral rim 138 of the front
shell 102 to the peripheral rim 140 of the rear shell 104. The dual closure mechanism
is operable between a fully opened configuration (Fig. 3), a first closed unexpanded
configuration (Fig. 1) and a second closed expanded configuration (Fig. 2). When fully
opened (Fig. 3), the dual closure mechanism allows a user to access the interior compartment
of the luggage case 100 by pivoting the front shell 102 and rear shell 104 relative
to one another about the hinge 142.
[0050] Referring to Fig. 4A, the dual closure mechanism, in one example, may include two
separate zipper mechanisms 164, 166 configured to allow the user to close the luggage
case 100 in the first closed unexpanded configuration defining a first interior volume.
Fig. 6 shows the dual closure mechanism, in one example, configured to allow the user
to close the luggage case 100 in the second closed expanded configuration defining
a second interior volume, the second interior volume being larger than the first interior
volume.
[0051] With continuing reference to Figs. 1 and 4A, the first zipper mechanism 164 is utilized
to allow a user to open and close the luggage case 100, and when in the closed configuration
maintain the luggage case 100 in an unexpanded state. The first zipper mechanism 164
may extend along the periphery of each of the front and rear shells 102, 104 from
adjacent one end of the hinge element 142 to adjacent the other end of the hinge element
142. The first zipper mechanism 164 may include a first zipper tape having a first
and second longitudinal edges separable by a zipper track 168 into a first half 170
and a second half 172, at least one zipper slider 174 associated with the zipper track
168 to seam and unseam the zipper track 168, and at least one zipper pull tab 152
associated with the zipper slider 174. The first zipper mechanism 164 may include
more than one oppositely directed zipper sliders 174. The first longitudinal edge,
or the first half 170, of the first zipper tape is secured to the front shell 102
and is positioned adjacent to the peripheral edge 138 of the front shell 102. The
second longitudinal edge, or the second half 172, of the first zipper tape is secured
to the rear shell 104 and is positioned adjacent to the peripheral edge 140 of the
rear shell 104.
[0052] Referring now to Figs. 2 and 6, the second zipper mechanism 166 may run along the
periphery 138, 140 of each of the front and rear shell 102, 104 from adjacent one
end of the hinge element 142 to adjacent the other end of the hinge element 142. The
second zipper mechanism 166 may include a second zipper tape having third and fourth
longitudinal edges separable by a zipper track 176 into a third half 178 and a fourth
half 180, at least one zipper slider 182 associated with the zipper track 176 to seam
and unseam the zipper track 176, and at least one zipper pull tab 154 associated with
the zipper slider 182. The second zipper mechanism 166 may include more than one oppositely
directed zipper sliders 182. The third longitudinal edge, or the third half 178, of
the second zipper tape is secured to the front shell 102 and is positioned adjacent
to the peripheral edge 138 of the front shell 102. The fourth longitudinal edge, or
the fourth half 180, of the second zipper tape is secured, along at least a portion
of its length, to an outer longitudinal edge 184 of the gusset 156. An inner longitudinal
edge 186 of the gusset 156 is secured to the rear luggage shell 104 adjacent to the
peripheral edge 140. The gusset 156 allows the front shell 102 to be selectively moved
away from the rear shell 104 up to a predetermined distance thereby increasing the
interior space enclosed by the front and rear shells 102, 104. Note that in at least
one example, the at least one zipper slider 174, 182 of each of the first and second
zipper mechanisms 164, 166 are movable independent of the other, thus allowing the
first and second zipper mechanisms 164, 166 to zip and unzip independent of each other.
The at least one zipper slider 174 of the first zipper mechanism 164 and the at least
one zipper slider 182 of the second zipper mechanism 166 may zip and unzip in the
same direction or in opposite directions.
[0053] In Figs. 4A, 4B and 6, the two zipper halves 170, 172 of the first zipper mechanism
164, assembled to the front and rear luggage shells 102, 104, are shown positioned
outwardly, or on the exterior side, the second zipper mechanism 166 and the associated
gusset 156 for expandability. Other configurations are contemplated, and will be discussed
in detail below.
[0054] Figs. 4A, 4B, 5 and 6 show one example of securing the two zipper tapes of the dual
closure mechanism to the respective peripheral edges 138, 140 of the front and rear
shells 102, 104. In general, coextensive first and third halves 170, 178 of the first
and second zipper mechanisms 164, 166 are together secured proximate to the peripheral
edge 138 of the front shell 102. The opposite longitudinal second half 172 of the
first zipper mechanism 164 is secured to the peripheral edge 140 of the rear shell
104 in the exterior position. The opposite longitudinal fourth half 180 of the zipper
tape of the second zipper mechanism 166 is secured to the outer longitudinal edge
184 of the gusset 156, and the opposite longitudinal edge 186 of the gusset 156 is
then secured to the peripheral edge 140 of the other shell 104 interior of the second
half 172 of the zipper tape of the first zipper mechanism 164. Many types of securement
or attachment modes to secure the zipper tapes or gusset 156 to the respective peripheral
edges 138, 140 of the shells 102, 104 are contemplated, such as sewing, bonding, stapling
and so on.
[0055] Continuing with Figs. 4A, 4B, 5 and 6, the zipper tapes may be attached to the luggage
case 100 shells through the use of S-shaped sheaths 188, 190. First and second S-shaped
sheaths 188, 190 are elongated and may extend along the peripheral edges 138, 140
of the front and rear shells 102, 104, respectively, to facilitate the attachment
of the zipper tape halves 170, 172, 178, 180 thereto. Each of the first and second
S-shaped sheaths 188, 190 may be made of a flexible plastic material, and may be formed,
for example, by extrusion molding. Each S-shaped sheath 188, 190 may include an outer
section 192, 198, a middle section 194, 200 and an inner section 196, 202 forming
the S-shape thereof. The outer section 192, 198 and middle section 194, 200 of each
of the first and second sheaths 188, 190 may define an exterior slot or recess opening
toward the dual closure mechanism. The inner section 196, 202 and middle section 194,
200 of each of the first and second sheaths 188, 190 may define an interior slot or
recess that has a common wall with the exterior recess. The interior recess opens
toward the opposite direction of the exterior recess, and in one example towards the
major face 118, 120 of the shell 102, 104 to which the S-shaped sheath 188, 190 is
attached. The width of the interior and exterior recesses may be the same or different
as desired, and as shown in Fig. 4A, the interior recess has a larger width dimension
than the exterior recess.
[0056] Referring specifically to Fig. 4A, the peripheral edge 138 of the front shell 102
and the edge portions of an inner liner 106 of the front shell 102 may form a two-layer
laminate and be received within the interior recess of the first sheath 188. The longitudinal
first edge the first zipper half 170 of the first zipper mechanism 164 and the third
longitudinal edge of the third zipper half 178 of the second zipper mechanism 166
form a two-layer laminate and are together received within the exterior recess of
the first S-shaped sheath 188. A line of stitching is secured through the laminate
formed by the layers of the first zipper half 170, third zipper half 178, middle section
of the sheath 194, adjacent body of the peripheral edge 138 of the front shell 102,
edge of liner 106 of the front shell 102, and the inner section 196 of the sheath
188. The stitching the above laminate layer in this example is accomplished by bending
the outer section 192 of the sheath 188 away from the middle section 194 to expose
the top layer of the first half 170 of the first zipper mechanism 164. Other types
of fasteners or securing techniques are contemplated, such as staples, adhesives,
or the like.
[0057] Continuing with Fig. 4A, the inner edge 186 of the gusset 156 and the second half
172 of the first zipper tape of the first zipper mechanism 164 may together be received
within the exterior recess of the second S-shaped sheath. The peripheral edge 140
of the rear shell 104 and the edge of the liner 108 of the rear shell 104 are received
in the interior recess of the second sheath 190 in a manner the same as or similar
to that described above with respect to the interior recess of the first sheath 188.
Securement of the laminate layer formed by the second half 172 of the first zipper
tape, the middle section 200 of the sheath 190, the inner edge 186 of the gusset 156,
the peripheral edge 140 of the rear shell 104, the edge of the liner 108 of the rear
shell 104, and the inner section 202 of the second sheath 190 is made by the stitching
(or other securing technique) as described above with respect to the first S-shaped
sheath 188. The outer section 192, 198 of each sheath 188, 190 may not be joined by
such connection mechanism and may serve as a protective cover to prevent damages to
such connection mechanism that may be caused by scuffs or abrasions, among other things.
Note that the S-shaped sheaths 188, 190 may extend along the portions of the periphery
138, 140 of a luggage shell 102, 104 only in regions where it is desired for the zipper
tape to be attached. It is contemplated that the liner 106, 108 in the above example
may be made up of more than one layer, depending on the construction of the luggage
case 100. In addition, additional features may be sewn into the S-sheath for anchoring,
such as internal securement straps 106, or the like, which may only extend a small
portion of the length of the periphery 138, 140.
[0058] In continuing reference to Fig. 4A, to configure the luggage case 100 of this example
in a closed and unexpanded position, the first zipper mechanism 164 is zipped, and
the second zipper mechanism 166 is not zipped. Alternatively, as shown in Fig. 4B,
to configure the luggage case 100 in a closed and unexpanded position, both the first
and second zipper mechanisms 164, 166 are zipped. In the unexpanded configuration,
the second zipper mechanism 166 and the associated gusset 156 are kept within the
interior compartment enclosed by the front and rear shells 102, 104 and the zipped
first zipper mechanism 164. The zipper tapes of the first and second zipper mechanism
166 may be configured in a superimposed or overlapping or overlying or coextensive
configuration. Accordingly, the first zipper half 170 of the first zipper mechanism
164 is positioned above or on the outside or exterior side of the third zipper half
178 of the second zipper mechanism 166. The width of the first zipper half 170 is
equal to or substantially equal to the width of the third zipper half 178 so that
the zipper teeth 204, 208 for each are vertically aligned. The zipper teeth 204, 208
of the first and third zipper halves 170, 178 are shown in contact with one another
in Fig. 4A, however it is contemplated that they are not in contact, but instead are
spaced apart. The first and third halves 170, 178 of the zipper tapes may be made
of flexible material, so zipper tapes may be separated.
[0059] The zipper tapes of the first and second zipper mechanisms 164, 166 may be configured
to be coextensive and/or overlapping or overlying along their longitudinal (length)
dimensions and/or transverse (width) dimensions. Figs. 4A and 4B show the first zipper
half 170 and the third zipper half 178 of the first and second zipper mechanisms 164,
166 configured to substantially align vertically with each other (relative to the
width dimensions of the zipper tapes). It is contemplated that there may be a difference
in the widths between the first and second zipper tapes such that the zipper tracks
168, 176 are not vertically aligned, or are only vertically aligned when in the zipped
configuration. For instance, in Fig. 4A the zipper teeth 210 of the fourth zipper
half 180 hangs down into the interior recess of the luggage case 100, at a distance
from the zipper teeth 208 of the third zipper half 178, when not secured to the matching
third zipper half 178. In this configuration, the zipper teeth 210 on the fourth zipper
half 180 are not in vertical alignment with the zipper teeth 206 of the second zipper
half 172, nor are the engaged zipper teeth 204, 206, 208, 210 of respective zipper
mechanism 164, 166 vertically aligned. Contrast the vertical alignment of the zipper
mechanisms 164, 166 of the first and second zipper tapes in Fig. 4B. In the zipped
configuration shown therein, the zipper teeth 204, 206, 208, 210 in the first and
second zipper tapes are engaged and vertically aligned, as well as in longitudinal
alignment, and the gusset 156 is gathered and extending inwardly and away from the
zipper tapes. It is contemplated that the zipper teeth 204, 206, 208, 210 of the zipper
mechanisms 164, 166 may not be vertically aligned or may not be longitudinally aligned,
and as such may be laterally offset from one another, if the widths of the zipper
tape halves are so designed. Such offset in widths may be introduced by using zipper
tapes of different dimensions, or incorporating gussets of selected and various sizes
to either or both longitudinal edges of the second zipper mechanism 166, or the first
zipper mechanism 164, for additional expandability, among other options.
[0060] With reference to Fig. 6, to configure the luggage case 100 in a closed and expanded
state, the first zipper mechanism 164 is unzipped and the second zipper mechanism
166 is zipped. This allows the interior volume to be expanded by the gusset 156 expanding
to its full width between the peripheral edges 138, 140. The first and second longitudinal
halves 170, 172 of the zipper tape of the first zipper mechanism 164 are relatively
narrow in width. This narrow width reduces the likelihood that the unused zipper tapes
of the first zipper mechanism 164 will be snagged and/or damaged as the expanded case
is handled. Also, the zipper tape of the first zipper mechanism 164 may be made of
relatively stiff material (such as PU coated or plastic-impregnated fabric) to keep
the zipper halves 170, 172 of the first zipper mechanism 164 from dangling or bending.
Accordingly, when the first zipper mechanism 164 is unzipped, the zipper halves 170,
172 thereof may remain relatively flat or flush with the extensions of the peripheral
edges 138, 140 of the front and rear shells 102, 104 of the luggage case 100, thereby
reducing damage that may be caused during usage.
[0061] The advantages of configuring the first and second zipper mechanisms 164, 166 and
the gusset 156 as described herein in comparison to conventionally constructed expandable
luggage cases, such as that shown in
EP 1638427,
EP 1689263,
GB 2173393,
TWM339233,
US 6609598,
US 2002148743,
US 2007267262,
WO 2011093984, are many. For instance, in a conventionally constructed expandable luggage case,
the opening/closing zipper and the expansion zipper are usually in a side-by-side
configuration whether in the expanded or unexpanded state. This may cause confusion
to a user since the user may mistake the opening/closing zipper for the expansion
zipper or vice versa, especially when the luggage case 100 is in the unexpanded state.
In contrast to the conventional side-by-side configuration, the dual closure mechanism
described herein is configured with the two zipper mechanisms 164, 166 displaced one
below or under the other in a coextensive and/or overlying or overlapping manner (see
Fig. 4B). It is contemplated that the terms coextensive, overlying or overlapping,
in the context here, may generally refer to a same or similar relative orientation
and positioning between the two zipper tapes, such as that shown in Fig. 4B. However,
each of these terms may also have different meanings, such as where "overlying" also
encompasses the respective zipper teeth not necessarily being longitudinally aligned
between the two zipper mechanisms when zipped (Such as Fig. 10). Or, for instance,
"overlapping" may also encompass a relative positioning where the respective zipper
teeth are only partially longitudinally aligned. Other distinctions between these
words may become apparent through the additional description and figures herein.
[0062] Referring back to Fig. 4B, this configuration is unlikely to cause such confusion
because when the luggage case 100 is in the unexpanded state only the first zipper
mechanism 164 for opening and closing the luggage case 100 is exposed to a user. Likewise,
when the luggage case 100 is in the closed and expanded configuration, only the second
zipper mechanism 166 used to open the case is exposed to the user. The side-by-side
orientation of the conventional expansion zipper may also allow the front and rear
shells to more easily shift relative to one another during use (whether expanded or
not), which is unsightly and may affect the towing of the luggage case. The side-by-side
configuration also takes up space between the front and rear shells in the unexpanded
configuration. As a result, in order to accommodate the expansion zipper, the front
and rear shells used in making conventional expandable luggage cases may be designed
and manufactured with different dimensions from those for non-expandable luggage cases,
which may result in additional design and manufacturing costs. In contrast, the superimposed
or overlaying or overlapping or coextensive configuration of the dual closure mechanism
as described herein does not necessarily take extra space along a depth dimension
of the luggage case 100, and maintain a single-zipper width between shells 102, 104
when in the unexpanded configuration. Accordingly, the superimposed or overlaying
or overlapping or coextensive configuration for expandability as described herein
provides enhanced compatibility with existing luggage designs.
[0063] Additionally, the superimposed or overlaying or overlapping or coextensive configuration
of the first and second zipper mechanisms 164, 166 may allow easy operation for a
user as compared to a conventional side-by-side zipper configuration. Specifically,
if a user desires to use a conventionally constructed expandable luggage case, the
user may have to perform two zipper operations when packing a luggage case: i) an
unzipping operation of the expansion zipper (second zipper mechanism 166 in the description
above) to increase the overall volume of the luggage case; and ii) a zipping operation
of the opening/closing zipper (first zipper mechanism 164 in the description above)
of the luggage case to close the luggage case for transportation. In contrast, when
packing a luggage case 100 having the dual closure configuration as described herein,
the user simply selects the corresponding zipper mechanism 164, 166 for unexpanded
or expanded configuration. The other zipper mechanism 164, 166 need not be actuated
(See Fig. 4A for unexpanded, and Fig. 6 for expanded). In other words, the second
zipper mechanism 166 may serve as a dual-function zipper that may allow the user to
achieve two goals, i.e., closing the luggage case 100 and expanding the overall volume
of the luggage case 100, through one single zipping operation of the second zipper
mechanism 166.
[0064] Another advantage of the dual closure zipper configuration as described herein is
that it may provide additional security. The additional security is provided when
both the first and second zipper closure mechanisms 164, 166 are zipped, which provides
a dual-layer of zippers to penetrate before accessing the interior compartment (see
Fig. 4B). Additionally, if the first and second zipper mechanisms 164, 166 are not
aligned with one another, such as with respect to Fig. 10, security aspect may be
further enhanced. More advantages of the superimposed or overlaying or overlapping
or coextensive zipper configuration as described herein may be appreciated by one
skilled in the art.
[0065] With reference to Figs. 1, 2, 3, 5 and 7, one example of the hinge element 142 of
the luggage case 100 is flexible material, and has a rectilinear shape with opposing
longitudinal edges 212 defining a length dimension and opposing short edges 214 defining
a width dimension. Other aspect ratios of the hinge element 142 may be contemplated.
The hinge element 142 of the luggage case 100 may include an outer layer 216 and an
inner layer 218. The outer layer 216 may be formed of relatively durable material
to withstand acting as a flexible hinge, such as plastic, metal, natural or man-made
woven or non-woven fabrics, natural materials, such as leather and so on. The inner
layer 218 may be formed of material similar to that used for forming inner liners
106, 108 of a luggage case 100, such as polyester or other natural or synthetic fabric.
In some examples, the inner and outer layers 216, 218 may be joined together by any
suitable method including, but not limited to, sewing, bonding, adhering, stapling
and so on. In some examples, the hinge element 142 of the luggage case 100 may include
only one layer.
[0066] The two opposing longitudinal edges 212 of the hinge element 142 may be joined to
portions of the peripheral edges 138, 140 about which the front and rear shells 102,
104 are desired to pivot open and close. With respect to Figs. 1, 2 and 3, this portion
is on the left panel 130 132 of each of the front and rear shells 102, 104. In some
examples as shown in Figs. 5 and 7, the longitudinal edges 212 of the hinge element
142 may be secured to the peripheral edges 138, 140 by the S-shaped sheaths 188, 190
as described above for the zipper mechanisms 164, 166, or any other suitable connection
method. Specifically, the longitudinal edges 212 of the hinge element 142 may be received
within the exterior recesses of the first and second S-shaped sheaths 188, 190, with
the peripheral edges 138, 140 of the respective luggage shells 102, 104 being positioned
in the inner recesses as noted above. The layers positioned in each recess then may
be attached to the sheaths 188, 190 and the peripheral edges 138, 140 of the front
and rear shells 102, 104 by any of a number of attachment mechanisms, such as sewing,
bonding, stapling and so on. The outer section 192, 198 of the sheath 188, 190 is
not sewn through in some instances to allow for the protection of the attachment mechanism,
as described above. In some examples, the longitudinal edges 212 of the hinge element
142 may be received within the respective interior recesses of the first and second
sheaths 188, 190, along with the peripheral edges 138, 140 and liners 106, 108. By
so attaching the longitudinal edges 212 of the hinge element 142, the hinge element
142 would naturally bend inwardly or protrude toward the inner compartment of the
luggage case 100 when the luggage case 100 is unexpanded. Such natural inward bending
advantageously protects the hinge element 142 from being pulled or snagged during
use.
[0067] Regarding the attachment of the gusset 156 to the luggage shell 104 and second zipper
mechanism 166, in continuing reference to Figs. 1, 2 and 3, the gusset 156 may terminate
at the hinge element 142, and be joined to the transverse edges 214 of the hinge element
142 by sewing, bonding, adhering, stapling, or any suitable attaching method. In some
examples, the gusset 156 may terminate under the hinge element 142, terminate over
the hinge element 142, or the short opposing ends 214 of the hinge element 142 may
be sandwiched between the inner layer 218 and the outer layer 216 of the hinge element
142. The second zipper mechanism 166 may also be joined to the transverse edges 214
of the hinge element 142 in a similar fashion. The zipper tape of the second zipper
mechanism 166 may terminate above or under the hinge element 142. The end portions
of the second zipper of the second zipper mechanism 166 may be sandwiched between
the inner and outer layers 216, 218 of the hinge element 142 and attached thereto
by sewing, bonding, adhering, stapling, or any suitable attaching method. At each
end of the zipper tape of the second zipper mechanism 166, a retainer may be provided
to prevent the associated zipper slider from coming off the zipper track 168.
[0068] On the first zipper mechanism 164, unlike the second zipper mechanism 166, end portions
220 of the longitudinal edges of the zipper tape of the first zipper mechanism 164
may be unattached to the luggage shells 102, 104 or the transverse edges 214 of the
hinge element 142, as best shown in Figs. 1 and 2. Such configuration would allow
the zipper halves 170, 172 at the end portions of the first zipper mechanism 164 to
move and adjust to accommodate the additional width added by the gusset 156 when the
luggage case 100 is used in its expanded state. When the luggage is unexpanded, to
prevent the end portions 220 of the first zipper mechanism 164 from being pulled or
snagged during transportation, the end portions 220 of the first zipper mechanism
164 may be tucked into the space between the first zipper mechanism 164 and the second
zipper mechanism 166. In some examples, the end portions 220 of the zipper tape of
the first zipper mechanism 164 may be provided with Velcro® tape, snap fastener or
other suitable fastener to releasably attach the end portions 220 of the zipper tape
of the first zipper mechanism 164 to an outer surface of the hinge element 142 or
any suitable portion of the luggage case 100.
[0069] As best shown in Figs. 2, 3, 5 and 7, the gusset 156 may be of consistent width along
its length. The width of the hinge element 142 may be similar to the width of the
gusset 156, or the combined width of the second zipper mechanism 166 and the gusset
156. Other width dimensions of the gusset 156 and the hinge element 142 may be contemplated.
For example, with reference to Figs. 8A and 8B, the gusset 156', 156" may form in
part a wedge shape with the two opposing longitudinal edges 184', 186', 184", 186"
of the gusset 156', 156" converging toward the short opposing ends 214', 214" of the
hinge element 142', 142". In some examples, the hinge element 142' may extend along
substantially the entire peripheral edges of the front shell left panel 130' and the
rear shell left panel 132' of the luggage case 100' (see Fig. 8A). The gusset 156'
may have two tapered ends 162 formed along at least portions of peripheral edges of
the top panels 122', 124' and the bottom panels (not shown) of the front and rear
shells. In some examples, the hinge element 142" may extend along portions of the
peripheral edges of the left panels 130", 132" of the front and rear shells of the
luggage case 100" (see Fig. 8B). The gusset 156" may have two tapered ends 163 formed
along at least portions of peripheral edges of the left panels 130", 132" and/or portions
of peripheral edges of the top panels 122", 124" and the bottom panels of the front
and rear shells of the luggage case 100". The width of the hinge element 142', 142"
of the examples shown in Figs. 8A and 8B may be relatively narrow, and may be similar
to the widths of the first and second zipper mechanisms 164, 166. When the luggage
case 100, 100', 100" is in a closed and expanded configuration, the gusset 156, 156',
156" expands and forms a portion of the exterior of the luggage case 100, 100', 100"
to increase the overall volume of the inner compartment of the luggage case 100, 100',
100". The gusset 156 of a constant width allows for a substantially equal expansion
along the entire peripheral edges 138, 140 of the luggage shells 102, 104. In contrast,
the gussets 156', 156" having tapered ends 162, 163 may allow the luggage case 100',
100" to change from little expansion on either end 214', 214" of the hinge element
142', 142" to maximum expansion opposite the hinge element 142', 142".
[0070] With reference to Fig. 9, a cross section view of a portion of a luggage case 300,
incorporating a fourth example of a zipper configuration that allows for expandability,
is shown in an expanded configuration. In this example, the luggage case 300 may include
a first zipper mechanism 364 that is primarily for opening/closing the luggage case
300, a second zipper mechanism 366 and a gusset 356 associated with the second zipper
mechanism 366 for expandability, the second zipper mechanism 366 and the gusset 356
being arranged above or on the outside or exterior side of the first zipper mechanism
364. The first zipper mechanism 364 is unzipped, the second zipper mechanism 366 is
zipped, and the gusset 356 is expanded to configure the luggage case 300 in the expanded
state. The first and second zipper mechanisms 364, 366 and the gusset 356 may be attached
to the peripheral edges 338, 340 of the front and rear shells 302, 304 of the luggage
case 300 using S-shaped sheaths 388, 390 as described above. To configure the luggage
case 300 unexpanded, the first zipper mechanism 364 is zipped, and the second zipper
mechanism 366 may be zipped or unzipped. The second zipper mechanism 366 is preferably
zipped when the luggage case 300 is in unexpanded configuration such that the gusset
356 forms a loop and does not flop around thereby limiting the damage to the zipper
teeth of the second zipper mechanism 366.
[0071] Fig. 10 shows a cross section view of a portion of a luggage case 400 in an unexpanded
state, incorporating a fifth example of a zipper configuration that allows for expandability.
The luggage case 400 in this example includes a first zipper mechanism 464 that is
primarily for opening/closing the luggage case 400, a second zipper mechanism 466
and a gusset 456 associated with the second zipper mechanism 466 for expandability
arranged above or on the outside or exterior side of the first zipper mechanism 464.
In contrast to the dual closure mechanisms described above, the luggage case 400 in
this example may further include a fifth zipper half 468. The fourth zipper half 476
of the second zipper mechanism 466 may be joined to a longitudinal edge 484 of the
gusset 456. The opposing longitudinal edge 486 of the gusset 456 may be joined to
the peripheral edge 440 of one of the front or rear shells 404 using an S-shaped sheath
490 as described above. The third zipper half 474 of the second zipper mechanism 466
may be joined to the peripheral edge 438 of the other of the front or rear shells
402 using an S-shaped sheath 488 as described above. The fourth zipper half 476 of
the second zipper mechanism 466 may selectively engage either the third zipper half
474 of the second zipper mechanism 466 or the fifth zipper half 468 depending on the
configuration of the luggage case 400. To configure the luggage case 400 in an expanded
state, the first zipper mechanism 464 is unzipped, the fourth first zipper half 476
of the second zipper mechanism 466 engages the third zipper half 474 of the second
zipper mechanism 466 thereby allowing the front shell 402 to move away from the rear
shell 404 by a distance of the gusset 456 width to increase the internal space of
the luggage case 400. When in its expanded state, the luggage case 400 of this example
is configured similar to that shown in Fig. 9. In continuing reference to Fig. 10,
to configure the luggage case 400 of this example in an unexpanded state, the first
zipper mechanism 464 is zipped, and the fourth zipper half 476 of the second zipper
mechanism 466 engages the fifth zipper half 468 thereby securely attaching the gusset
456 to the luggage case 400 and keeps the gusset 456 relatively flat when the luggage
case 400 is in the unexpanded state. Alternatively, the fourth zipper half 476 of
the second zipper mechanism 466 may engage the third zipper half 474 and form a loop
which prevents the gusset 456 from flopping around and reduce any damage to the zipper
teeth of the second zipper mechanism 466.
[0072] Fig. 11 shows a representative cross section view of a portion of a luggage case
500 in an expanded state, incorporating a sixth example of a zipper configuration
that allows for expandability. In this example, the luggage case 500 includes a first
zipper mechanism 564, a second zipper mechanism 566, a first gusset 556 and a second
gusset 557. The first and/or second zipper mechanisms 564, 566 may extend along at
least a portion of the periphery of the front and rear shells 502, 504. The first
zipper mechanism 564 may include a first zipper tape having a first and second longitudinal
edges separable by a zipper track into a first half 570 and a second half 572. The
first longitudinal edge, or the first half 570, of the first zipper mechanism 564
may be joined to the front shell 502 and positioned adjacent to the peripheral edge
538 of the front shell 502. The second longitudinal edge, or the second half 572,
of the first zipper mechanism 564 may be joined to the rear shell 504 and positioned
adjacent to the peripheral edge 540 of the rear shell 504. The second zipper mechanism
566 may include a second zipper tape having a third and a fourth opposing longitudinal
edges separable by a zipper track into a third half 578 and a fourth half 580. The
third longitudinal edge, or the third half 578, of the second zipper mechanism 566
may be joined to one of the opposing longitudinal edges 584 of the first gusset 556,
and the other one of the opposing longitudinal edges 585 of the first gusset 556 may
be joined to the peripheral edge 538 of the front shell 502. The fourth longitudinal
edge, or the fourth half 580, of the second zipper mechanism may be joined to one
of the opposing longitudinal edges 586 of the second gusset 557, and the other one
of the opposing longitudinal edges 587 of the second gusset 557 may be joined to the
peripheral edge 540 of the rear shell 504. The second zipper mechanism 566 and the
associated first and second gussets 556, 557 may be positioned to the interior of
the first zipper mechanism 564. It is contemplated that the second zipper mechanism
566 and the associated first and second gussets 556, 557 may be positioned to the
exterior of the first zipper mechanism 564.
[0073] The first and second zipper mechanisms 564, 566 and the first and second gussets
556, 557 may allow a user to configure the luggage case 500 in a closed fully expanded
position, a closed half expanded position, or a closed unexpanded position depending
on the user's needs. In continuing reference to Fig. 11, to configure the luggage
case 500 in a closed fully expanded configuration, the first zipper mechanism 564
is unzipped, and the second zipper mechanism 566 is zipped. The first and second gussets
556, 557 expand thereby increasing the overall interior volume of the luggage case
500 in accordance with the combined gusset widths of the first and second gussets
556, 557. To configure the luggage case 500 in a closed half expanded position, the
first zipper half 570 of the first zipper mechanism 564 may engage the fourth zipper
half 580 of the second zipper mechanism 566. In this configuration, the second gusset
557 may expand and form a portion of the exterior of the luggage case 500 thereby
increasing the internal volume of the luggage case 500 in accordance with the gusset
width of the second gusset 557, and the first gusset 556 is kept within the interior
compartment enclosed by the front and rear shells 502, 504 and the engaged first zipper
half 570 of the first zipper mechanism 564 and the engaged fourth zipper half 580
of the second zipper mechanism 566. Alternatively, to configure the luggage case 500
in a closed half expanded position, the second zipper half 572 of the first zipper
mechanism 564 may engage the third zipper half 578 of the second zipper mechanism
566. Accordingly, the first gusset 556 may expand and form a portion of the exterior
of the luggage case 500 thereby increasing the internal volume of the luggage case
500 in accordance with the gusset width of the first gusset 556, and the second gusset
557 is kept within the interior compartment enclosed by the front and rear shells
502, 504 and the engaged second zipper half 572 of the first zipper mechanism 564
and the engaged third zipper half 578 of the second zipper mechanism 566. In some
examples, the first and second gussets 556, 557 may be formed with the same width
dimension, together defining the amount of expansion of the luggage case. In some
examples, the first and second gussets 556, 557 may be formed with different width
dimensions thereby allowing the user to use the luggage case in two different closed
half expanded configurations with two different interior volumes. It is contemplated
that the first and second gussets 556, 557 may be formed with constant or varying
width along their respective longitudinal dimension. The first and/or second gussets
556, 557 may define at least one tapered end or a wedge shape.
[0074] To configure the luggage case 500 in a closed unexpanded position, the first zipper
mechanism 564 is zipped. The second zipper mechanism 566 and the associated first
and second gusset 556, 557 are kept within the interior compartment defined by the
zipped first zipper mechanism 564 and the engaged front and rear shells 502, 504 of
the luggage case 500. In this configuration, the second zipper mechanism 566 may be
zipped. The first and second zipper mechanisms 564, 566 may be configured in an overlaying
or overlying or superimposed or coextensive manner. The zipper teeth of the first
and second zipper mechanisms 564, 566 may be vertically and/or longitudinally aligned.
It is contemplated that the zipper teeth of the first and second zipper mechanisms
564, 566 may not be vertically aligned or longitudinally aligned, and as such may
be laterally offset from one another.
[0075] Although the security lock 150 is shown in Figs. 1, 2 and 3 positioned at the top
panel of the front shell 102 of the luggage case 100, it should be appreciated that
the security lock 150 may be positioned at any panel of the front and rear shells
102, 104 of the luggage case 100. In some examples, the security lock 150 may be positioned
at the shell different from the shell to which the gusset 156 is joined to, as is
shown in Fig. 12. In other examples, the security lock 150 may be positioned at the
same shell to which the gusset 156 is joined to, as is shown in Fig. 13. Both configurations
allow a user to lock the luggage case 100 in its expanded and unexpanded state. For
the configuration shown in Fig. 13, longer zipper pull tabs 222 may be used for the
second zipper mechanism 166 to engage the security lock 150 when the luggage case
100 operates in an expanded state.
[0076] Although a hard side luggage case is described herein as examples incorporating various
zipper configurations for expandability, the dual closure mechanisms as described
herein may be incorporated to a soft side luggage case, a hard side luggage case,
a hybrid luggage case, or any luggage case that may desire expandability. In the example
of a soft side luggage case, the panels of the soft side luggage case may be formed
using a relatively soft or non-rigid or flexible material (collectively, "softer material"),
such as natural or man-made woven or non-woven fabrics, or natural materials, such
as leather, and so on. A supporting or reinforcing structure, such as a polypropylene
("PP") or polyethylene ("PE") sheet, may be provided between an outer cover and an
inner liner of the soft side luggage case. Edge piping with metal wires included therein
may be formed along the periphery of one or more panels of the luggage case to provide
additional shape and structural support. The soft side luggage case may be further
configured with front/rear panel pockets and similar features for additional storage
space. In the example of a hard side luggage case, the front and rear shells of the
hard side luggage case may each be formed as an integral piece using a relatively
rigid, semi-rigid, hard, or semi-hard material (collectively "harder material"), such
as acrylonitrile-butadiene-styrene ("ABS") plastic, polycarbonate plastic, an ABS/polycarbonate
blend, and so on. In the example of a hybrid luggage case, the rear shell may be formed
using a harder material and the front shell may be formed using a softer material,
or vice versa. The shell formed with softer material may further include pockets and/or
features similar to those included in soft side luggage cases.
[0077] It should be appreciated that although a luggage case is described herein as an example,
the zipper configuration for expandability as described herein may be incorporated
into any luggage cases, such as suitcases, duffle bags, backpacks, briefcases, laptops
bags, and so on.
[0078] It should also be appreciated that although the gusset is shown extending along the
entirety or portions of four sides of the luggage case, the gusset may extend along
less than four sides of the luggage case. For example, when the zipper configuration
is incorporated in a computer bag with a top opening, the gusset may extend along
only the top opening side and/or portions of the left and right sides of the computer
bag. The gusset may be formed into any suitable shape, such as a belt with constant
or varying widths, a wedge and so on. The gusset may be formed as an integral piece
or as multiple sections. Other configurations of the gusset may be used depending
on the specific luggage case and the construction thereof.
[0079] It should also be appreciated that the gusset may be constructed as a single layer
structure, or a combination of an outer layer, an inner layer and/or additional layers,
or any other suitable fashion. The gusset may also include additional structural elements.
A reinforcing structure, such as a PE or PP panel or a metal wire, may be contained
inside the pocket formed by an outer layer and an inner layer of the gusset to provide
additional structural support and to enhance shape integrity when the luggage case
operates in an expanded state. In some examples, the gusset may be formed as panel
structures, such as PE, PP, ABS or polycarbonate plastic sheet(s) or plate(s), with
or without additional fabric layers. The gusset may be joined to either the rear shell
of the luggage case as shown in Fig. 3 or the front shell of the luggage case.
[0080] It should be noted that while the zipper tape of the first primary zipper mechanism
is shown above substantially in vertical alignment (relative to the width dimensions
of the zipper mechanisms) with the zipper tape of the second zipper mechanism, the
zipper tape of the first primary zipper mechanism may be considered overlapping or
overlying or superimposed over the zipper tape of the second zipper mechanism or coextensive
with the zipper tape of the second zipper mechanism even though there may be an offset
between the two. Alternatively, the zipper tape of the second primary zipper mechanism
may overlap or overlie or be superimposed over or coextensive with the zipper tape
of the first zipper mechanism, with or without an offset between the two. The zipper
tapes of the first and second zipper mechanisms may be configured to be coextensive
along their longitudinal (length) dimensions and/or transverse (width) dimensions.
The first and second zipper mechanisms may commonly extend along a portion or the
entirety of the peripheral edges of the front and rear shells of the luggage case.
[0081] Although the longitudinal edges of the first zipper mechanism and the longitudinal
edges of the second zipper mechanism and the associated gusset are all shown received
in the respective exterior recesses of the first and second S-shaped sheaths, the
longitudinal edges may all be received in the interior recesses of the first and second
S-shaped sheaths. It should be appreciated that the longitudinal edges of the first
zipper mechanism may be received within the exterior recesses of the first and second
sheaths while the longitudinal edges of the second zipper mechanism and the associated
gusset may be received in the interior recesses of the first and second sheaths, or
vice versa. Similarly, the longitudinal edges of the hinge element may be received
within either the interior or the exterior recesses of the first and second sheaths.
[0082] It should be noted that all directional and/or dimensional references (e.g., upper,
lower, upward, downward, left, right, leftward, rightward, top, bottom, above, below,
front, back, rear, forward, backward, rearward, inner, outer, inward, outward, vertical,
horizontal, clockwise, counterclockwise, length, width, height, depth, and relative
orientation) are only used for identification purposes to aid the reader's understanding
of the implementations of the disclosed invention(s), and do not create limitations,
particularly as to the position, orientation, use relative size or geometry of the
invention(s) unless specifically set forth in the claims.
[0083] Connection references (e.g., attached, coupled, connected, joined, and the like)
are to be construed broadly and may include intermediate members between a connection
of elements and relative movement between elements. As such, connection references
do not necessarily infer that two elements are directly connected and in a fixed relation
to each other.
[0084] In some instances, components are described with reference to "ends" having a particular
characteristic and/or being connected with another part. However, those skilled in
the art will recognize that the disclosed invention(s) is not limited to components
that terminate immediately beyond their points of connection with other parts. Thus,
the term "end" should be interpreted broadly, in a manner that includes areas adjacent,
rearward, forward of, or otherwise near the terminus of a particular element, link,
component, part, member or the like. In methodologies directly or indirectly set forth
herein, various steps and operations are described in one possible order of operation,
but those skilled in the art will recognize that steps and operations may be rearranged,
replaced, or eliminated without necessarily departing from the spirit and scope of
the present invention. It is intended that all matter contained in the above description
or shown in the accompanying drawings shall be interpreted as illustrative only and
not limiting. Changes in detail or structure may be made that are within the scope
of the appended claims.