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(11) | EP 3 450 071 A1 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | HANDHELD PIPE CUTTER COMPRISING A RESIZER AND A METHOD OF RESIZING THE SAME |
| (57) A handheld pipe cutter, comprising: a body defining a volume with an axis for receiving
a portion of a pipe such that the longitudinal axis of the pipe is aligned with the
axis of the volume; and a blade protruding into the volume for cutting the pipe, wherein
the body comprises a resizer having a retracted configuration and an extended configuration;
the resizer is configured to be transitioned between the retracted configuration and
the extended configuration by a rotation of the resizer about a rotation axis of the
resizer; and in the retracted configuration a first portion of the resizer is oriented
to define a surface of the volume such that the volume has a dimension having a first
length, and in the extended configuration a second portion of the resizer is oriented
to define a surface of the volume such that the dimension of the volume has a second
length, the first length being greater than the second length.
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Technical Field
[0001] The present disclosure relates to a handheld pipe cutter, and particularly to a handheld pipe cutter having a resizer. The present disclosure also relates to a method of resizing a handheld pipe cutter.
Background
[0002] Typically, a handheld pipe cutter has two opposing arms which define a slot therebetween. The slot is configured to receive a portion of a pipe. A blade protrudes into the slot such that upon relative rotation of the pipe and the handheld pipe cutter, the circumference of the pipe is cut.
[0003] In order for the handheld pipe cutter to reliably cut the portion of the pipe, the pipe must fit snuggly in the slot so that the pipe can be easily rotated relative to the handheld pipe cutter without causing jittering of the pipe. Accordingly, the size of the slot, and therefore the handheld pipe cutter used, must correspond to the diameter of the pipe to be cut.
[0004] In some known handheld pipe cutters, the size of the slot may be adjusted such that different diameter pipes may be cut. Typically, this is done by linearly translating one of the arms relative to the other such that a dimension of the slot is adjusted. The mechanism to translate the arm is similar to that used in a vice. Specifically, one arm is fixed and the other arm is movable by a screw and a lever mechanism.
[0005] However, with such a handheld pipe cutter, the lever extends outside the body, and, therefore, may hinder the rotation of the pipe cutter about the pipe in confined environments.
[0006] Accordingly, there is a need for a compact handheld pipe cutter which is able to cut multiple pipes of different diameters. There is also a need for an improved method of resizing a pipe cutter.
Summary
[0007] Accordingly, it is an object of the present disclosure to provide a compact handheld pipe cutter which is able to cut multiple pipes of different diameters.
[0008] It is also an object of the present disclosure to provide an improved method of resizing a pipe cutter.
[0009] At least one of these objectives are achieved with a handheld pipe cutter with the technical features of claim 1 and with the method of claim 14.
[0011] According to a first aspect, there is provided a handheld pipe cutter. The hand held pipe cutter comprises a body defining a volume with an axis for receiving a portion of a pipe such that the longitudinal axis of the pipe is aligned with the axis of the volume. The handheld pipe cutter further comprises a blade protruding into the volume for cutting the pipe. The body comprises a resizer having a retracted configuration and an extended configuration. The resizer is configured to be transitioned between the retracted configuration and the extended configuration by a rotation of the resizer about a rotation axis of the resizer. In the retracted configuration a first portion of the resizer is oriented to define a surface of the volume such that the volume has a dimension having a first length. In the extended configuration a second portion of the resizer is oriented to define a surface of the volume such that the dimension of the volume has a second length. The first length is greater than the second length.
[0012] Throughout this disclosure, the term 'handheld pipe cutter' is to be interpreted as a pipe cutter of a size, shape and mass such that it may be held and manipulated in one or both hands while it is in use to cut a pipe. In particular, a handheld pipe cutter does not require additional support structures connecting it to other apparatuses, such as a table, so as to support or manipulate it whilst in use.
[0013] Throughout this disclosure, the term 'a portion of a pipe' refers to a longitudinal section of a pipe.
[0014] With such a configuration, the length of the dimension of the volume, and thus the size of pipe that can be received within the volume, can be easily and conveniently adjusted by rotating the resizer about the rotation axis such that the portion of the resizer that defines the surface of the volume is altered.
[0015] Accordingly, adjusting the length of the dimension of the volume does not require any adjustment of the dimensions of the resizer or any adjustment of the dimensions of the rest of the body of the pipe cutter. Such a configuration may allow for a more compact arrangement of the elements of the handheld pipe cutter.
[0016] Furthermore, the length of the dimension of the volume is adjusted without translating any portion of the body of the handheld pipe cutter. Accordingly, a pipe cutter according to the present disclosure obviates the need for a lever or similar mechanism to control such linear translation of a portion of the body, thereby allowing for a handheld pipe cutter with a more compact profile.
[0017] Hence, with such a configuration, it is possible to provide a compact handheld pipe cutter which allows for cutting of pipes of different diameters.
[0019] In this example, the rotation axis is aligned with the axis of the volume, and, therefore, with the longitudinal axis of the pipe received within the volume. With such a configuration, a resizer may be provided which abuts the portion of the pipe along a length of the resizer along the axis of rotation while having a uniform cross section perpendicular to the rotation axis.
[0020] Accordingly, the area of contact with the pipe is increased, which may reduce jittering of the pipe when it is rotated relative to the handheld pipe cutter, thereby allowing the pipe to be cut more reliably. Furthermore, provision of a resizer with a uniform cross section may allow for a more compact arrangement of the elements of the handheld pipe cutter around the volume.
[0021] Hence, with such a configuration, it is possible to provide a more compact handheld pipe cutter which allows for a more reliable cutting of pipes of different diameters.
[0022] In one example, the resizer is asymmetric about the rotation axis of the resizer. In other words, the resizer is rotationally asymmetric about the rotation axis of the resizer.
[0023] With such a configuration, the rotation axis of the resizer may be in a fixed position relative to the other elements of the handheld pipe cutter while providing a first portion and a second portion which, when orientated to define a surface of the volume, result in a difference in length in the dimension of the volume that is sufficient to allow for cutting of pipes of different sizes.
[0024] The rotation axis of the resizer being in a fixed position relative to the rest of the body of the handheld pipe cutter may allow for a more compact arrangement of the elements of the pipe cutter.
[0025] Hence, with such a configuration, it is possible to provide a more compact handheld pipe cutter, which allows for cutting of pipes of different diameters.
[0027] In one example, the resizer is asymmetric about a plane that bisects the first portion and the second portion.
[0029] Typically pipes have a curved cross section. With such a configuration, the size of the volume required to accommodate a portion of a pipe of a particular diameter may be reduced as the surface of the pipe may substantially conform to the concave first portion of the resizer. A reduction in the required size of the volume defined by the body may allow for a more compact arrangement of the elements of the pipe cutter.
[0030] Furthermore, with such a configuration, the extent to which the second portion extends into the volume in the direction of the dimension of the volume may be increased for a given maximum radius of the resizer. Accordingly, the maximum radius of the resizer may be reduced while still providing a sufficient change in length of the dimension of the volume to accommodate pipes of different diameters.
[0031] Hence, with such a configuration, it is possible to provide a more compact handheld pipe cutter without affecting the diameter of the pipes with which the pipe cutter may be used.
[0033] Typically pipes have a circular cross section. With such a configuration, the area of contact between the first portion or the second portion of the resizer and the portion of the pipe received within the volume may be increased without increasing the size of the resizer. An increased area of contact between the resizer and the pipe cutter may allow for a more snug fit of the pipe in the volume. Accordingly, jittering of the pipe when it is rotated relative to the handheld pipe cutter may be reduced.
[0034] Hence, with such a configuration, is it is possible to provide a compact handheld pipe cutter which allows for a more reliable cutting of the pipe.
[0036] With such a configuration, the area of contact between the resizer and the portion of the pipe received within the volume may be increased without increasing the maximum radius of the resizer. An increased area of contact between the resizer and the pipe cutter may allow for a more snug fit of the pipe in the volume. Accordingly, jittering of the pipe when it is rotated relative to the handheld pipe cutter may be reduced.
[0037] Hence, with such a configuration, is it is possible to provide a compact handheld pipe cutter which allows for a more reliable cutting of the pipe.
[0038] In one example, the resizer extends along the whole length of the body along the axis of the volume.
[0039] With such a configuration, the area of contact between the resizer and the portion of the pipe received within the volume may be maximised without increasing the maximum radius of the resizer and without increasing the size of the handheld pipe cutter. An increased area of contact between the resizer and the pipe cutter may allow for a more snug fit of the pipe in the volume. Accordingly, jittering of the pipe when it is rotated relative to the handheld pipe cutter may be reduced while maintaining a compact arrangement of the elements of the handheld pipe cutter.
[0040] Hence, with such a configuration, is it is possible to provide a more compact handheld pipe cutter which allows for a more reliable cutting of the pipe.
[0041] In one example, the body further comprises another resizer having a retracted configuration and an extended configuration, wherein the another resizer is configured to be transitioned between the retracted configuration and the extended configuration by a rotation of the another resizer about a rotation axis of the another resizer, wherein in the retracted configuration a first portion of the another resizer is oriented to define a surface of the volume such that the dimension has a third length, and wherein in the extended configuration a second portion of the another resizer is oriented to define a surface of the volume such that the dimension of the volume has a fourth length, the third length being greater than the fourth length.
[0042] The third length and the fourth length are to be measured/compared when other parts of the body are fixed
[0043] (i.e. any other resizer is in the same configuration). Specifically, the third length and the fourth length are to be measured/compared whilst the resizer is in the retracted configuration or the extended configuration).
[0044] Similarly, the first length and the second length are to be measured/compared when other parts of the body are fixed (i.e. any other resizer is in the same configuration). Specifically, the first length and the second length are to be measured/compared whilst the another resizer is in the retracted configuration or the extended configuration).
[0045] All of the features or any combination of the features described herein in relation to the resizer may also be features of the another resizer.
[0048] In one example, the resizer and the another resizer are disposed on opposite sides of the volume.
[0049] With such a configuration, the difference in length of the dimension overall corresponds to the sum of the difference in length of the dimension attributable to the rotation of the resizer and the difference in length of the dimension attributable to the rotation of the another resizer.
[0050] The difference in the length of the dimension attributable to each resizer corresponds to the difference between the extent to which the first portion extends radially outwards from the rotation axis and the extent to which the second portion extends radially outwards from the rotation axis.
[0051] Accordingly, with such a configuration, the handheld pipe cutter may provide the required overall difference in the length of the dimension using two resizers, both of which may have a smaller maximum radius than a single resizer capable of providing an equivalent difference in length. Such a reduction in the maximum radius of the resizers may result in a reduction in the combined volume of the resizers compared to a handheld pipe cutter comprising a single resizer, thereby allowing for a more compact arrangement of the elements of the pipe cutter.
[0052] Hence, with such a configuration, it is possible to provide a more compact handheld pipe cutter without affecting the diameter of the pipes with which the pipe cutter may be used.
[0054] In one example, the dimension of the volume is perpendicular to the longitudinal axis of the pipe when it is received within the volume.
[0055] With such configurations, the dimension of the volume is therefore perpendicular to the longitudinal axis of the pipe received within the volume. Typically, pipes have a circular cross section. As such, the dimension of the volume may be coincident with a radial axis of the portion of the pipe received within the volume such that the entire difference in length of the dimension of the volume achieved by rotation of the resizer is effective along a radial axis of the pipe.
[0056] Accordingly, with such a configuration, the required difference in length of the dimension of the volume may be reduced and therefore, the radial size of the resizer may be reduced, allowing for a more compact arrangement of the elements of the handheld pipe cutter.
[0057] Hence, with such a configuration, it is possible to provide a more compact handheld pipe cutter without affecting the diameter of the pipes with which the pipe cutter may be used.
[0058] In one example, the body comprises two opposing arms, the two arms defining the volume therebetween for receiving the portion of a pipe, and wherein the resizer is disposed on one of the two opposing arms.
[0059] In one example, the body further comprises another resizer, and wherein the another resizer is disposed on the other of the two opposing arms.
[0061] In one example, the two opposing arms define an opening therebetween for inserting the pipe into the volume by translating the pipe in a direction perpendicular to its longitudinal axis.
[0062] In one example, the two opposing arms define an opening therebetween for inserting the pipe into the volume by translating the pipe in a direction coincident with its longitudinal axis.
[0063] In one example, the distal ends of the two opposing arms define an opening therebetween for inserting the pipe into the volume.
[0064] Throughout this disclosure, the term 'distal end of the arm of the body' refers to an end of the arm which is furthest away from the point of attachment of the arm to the rest of the body.
[0065] In one example, the two opposing arms of the body extend away from the rest of the body. In one example, the two arms are parallel.
[0067] In one example, the handheld pipe cutter comprises two opposing pairs of arms, and the volume for receiving a portion of the pipe being defined between the opposing pairs of arms.
[0068] In one example, in the retracted configuration the first portion of the resizer is flush with the surrounding portions of the body.
[0069] Throughout this disclosure, the term 'flush' describes an element that is level or even with the surface of another element.
[0070] With such a configuration, the surface of the volume defined by the first portion of the resizer does not function as a limiting factor for the maximum diameter of pipe that can be received within the volume. Therefore, the size of the volume for use with pipes of a given diameter does not need to be increased in any dimension to account for the first portion of the resizer extending into the volume. Accordingly, such a configuration may allow for a more compact arrangement of the elements of the handheld pipe cutter.
[0071] Hence, with such a configuration, it is possible to provide a more compact handheld pipe cutter without affecting the diameter of the pipes with which the pipe cutter may be used.
[0072] In one example, the first portion has the same radius of curvature as a surrounding portion of the body which is configured to abut the pipe.
[0073] Typically pipes have a circular cross section. With such a configuration, the area of contact between body of the pipe cutter and the portion of the pipe received within the volume may be increased without increasing the size of the body. An increased area of contact between the resizer and the pipe cutter may allow for a more snug fit of the pipe in the volume. Accordingly, jittering of the pipe when it is rotated relative to the handheld pipe cutter may be reduced.
[0074] Hence, with such a configuration, it is possible to provide a compact handheld pipe cutter that more reliably cuts the pipe.
[0077] With such a configuration, the user of the pipe cutter may easily and conveniently transition the resizer between the retracted configuration and the extended configuration.
[0078] Furthermore, slot drive, Phillips drive and Pozi drive are widely used screw drives. With such a configuration, the user may easily and conveniently transition the resizer between the retracted configuration and the extended configuration using existing screwdrivers or similar tools.
[0079] Hence, with such a configuration, it is possible to provide a compact handheld pipe cutter which allows for a more easy and convenient cutting of multiple pipes of different diameters.
[0080] In one example, the first portion is configured to abut the portion of the pipe when the resizer is in the retracted configuration and the second portion is configured to abut the portion of the pipe when the resizer is in the extended configuration.
[0081] In one example, the first portion of the resizer and the second portion of the resizer have a different radius of curvature.
[0082] In one example, at least a portion of the first portion has a negative radius of curvature, and wherein, at least a portion of the second portion has a positive radius of curvature.
[0083] In one example, the resizer does not extend beyond the body of the handheld pipe cutter along the rotation axis.
[0085] In one example, the handheld pipe cutter comprises a securer configured to connect a distal section of each of the two arms together, such that the two arms are urged towards each other thereby to secure the pipe within the volume.
[0086] Throughout this disclosure, the term 'connect' refers to a direct or indirect attaching of two elements.
[0087] Throughout this disclosure, the term 'distal section of the arm of the body' refers to a section of the arm which is away from the point of attachment of the arm to the rest of the body. In some examples, a 'distal section of the arm of the body' may refer to a distal end of the arm or the distal-most section of the arm.
[0088] In one example, the two opposing arms are configured such that as the two arms are urged towards each other, the distance between the two arms is reduced.
[0089] In one example, the two opposing arms are configured such that as the two arms are urged towards each other, the dimension of the volume reduces.
[0090] In one example, the first portion and/or the second portion comprises a slanted portion configured to abut the portion of the pipe, and configured such that as the two arms are urged towards each other the slanted portion forces the pipe towards the blade.
[0091] In one example, the opposing arms are configured such that as the two arms are urged together, the pipe is forced towards the blade.
[0092] In this example, the user is not required to manually force the portion of the pipe towards the blade while rotating the pipe relative to the handheld pipe cutter. Force applied manually by a user can be variable or insufficient, resulting in unreliable cutting of the pipe.
[0093] Hence, with such a configuration, it is possible to provide a compact handheld pipe cutter with which the user may rotate the handheld pipe cutter relative to the pipe to cut the pipe more conveniently and reliably.
[0094] In one example, the securer has an open configuration in which the securer does not connect the distal sections of the two opposing arms and a closed configuration in which the securer connects the distal sections of the two opposing arms.
[0095] In one example, the securer is configured to connect the distal section of each arm together such that the two arms are pulled towards each other.
[0096] In one example, the securer is configured to connect the distal section of each arm together such that the dimension of the volume is reduced.
[0097] In one example, the securer is configured to secure the pipe within the volume whilst the body is rotated relative to the pipe in a clockwise direction and an anti-clockwise direction.
[0098] In one example, when in use, the longitudinal axis of the pipe is parallel to a longitudinal axis of the volume.
[0099] In one example, the cutting edge of the blade is orientated perpendicular to the longitudinal axis of the pipe when the pipe is received in the volume.
[0100] In one example, the cutting edge of the blade is orientated parallel to the longitudinal axis of the pipe when the pipe is received in the volume.
[0101] In one example, the cutting edge of the blade is oriented to cut the pipe along a circumferential direction of the pipe upon relative rotation of the pipe and the handheld pipe cutter.
[0102] In one example, the cutting edge of the blade is oriented to cut the pipe along a longitudinal direction of the pipe upon relative movement of the pipe and the handheld pipe cutter. In one example, the handheld pipe cutter is a handheld pipe cutter with a largest dimension that is less than 95mm and a mass that is less than 100g. Preferably, the handheld pipe cutter is a handheld pipe cutter with a largest dimension that is less than 70mm and a mass that is less than 60g. More preferably, the handheld pipe cutter is a handheld pipe cutter with a largest dimension of 66mm and a mass of 52g.
[0103] In one example, the handheld pipe cutter has a largest dimension that is less than 95mm. Preferably, the handheld pipe cutter has a largest dimension that is less than 70mm. More preferably, the handheld pipe cutter has a largest dimension of 66mm.
[0104] In one example, the handheld pipe cutter has a mass that is less than 0.5kg. Preferably, the handheld pipe cutter has a mass that is less than 100g. More preferably, the handheld pipe cutter has a mass that is less than 60g. More preferably still, the handheld pipe cutter has a mass of 52g.
[0105] In one example, the handheld pipe cutter is configured to cut pipes with a diameter of 22mm and/or 15mm.
[0106] In one example, the body of the handheld pipe cutter is made of an elastically deformable material. Preferably, the handheld pipe cutter is made of an elastically deformable plastic. Preferably, the body of the handheld pipe cutter is made of one of ABS plastic, Polyamide, or Polypropylene.
[0107] According to a second aspect, there is provided a method of resizing a handheld pipe cutter which comprises a body defining a volume for receiving a portion of a pipe. The method comprises transitioning a resizer between a retracted configuration and an extended configuration by rotating the resizer about a rotation axis of the resizer. In the retracted configuration a first portion of the resizer is oriented to define a surface of the volume such that the volume has a dimension having a first length. In the extended configuration a second portion of the resizer is oriented to define a surface of the volume such that the dimension of the volume has a second length. The first length is greater than the second length.
[0108] In one implementation, the handheld pipe cutter is any of the handheld pipe cutters described herein.
[0109] The above-noted examples may be used individually, all together, or in any combination of two or more, as the present disclosure is not limited in this respect.
[0110] Further features and effects of the handheld pipe cutter and the method of cutting a pipe according to the present disclosure will be evident from the following description of certain examples. In the description of these examples, reference is made to the accompanying drawings.
Brief Description of the Drawings
[0111] For a better understanding of the present disclosure and to show how the same may be carried into effect, reference will now be made, by way of example only, to the accompanying drawings, in which:
Figure 1 shows a front view of a handheld pipe cutter according to the present disclosure, in which the resizers are in a retracted configuration;
Figure 2 shows a front view of a handheld pipe cutter according to the present disclosure, in which the resizers are in an extended configuration;
Figure 3 shows a front view of a handheld pipe cutter according to the present disclosure, in which the resizers are in the retracted configuration and a pipe is inserted in the handheld pipe cutter;
Figure 4 shows a perspective view of a handheld pipe cutter according to the present disclosure, in which the resizers are in the retracted configuration and the pipe is inserted in the handheld pipe cutter;
Figure 5 shows a front view of a handheld pipe cutter according to the present disclosure, in which the resizers are in the extended configuration and a pipe is inserted in the handheld pipe cutter; and
Figure 6 shows a perspective view of a handheld pipe cutter according to the present disclosure, in which the resizers are in the extended configuration and a pipe is inserted in the handheld pipe cutter.
Detailed Description
[0112] Figure 1 shows a front view of a handheld pipe cutter 10 according to the present disclosure, in which resizers 15a, 15b are both in a retracted configuration.
[0113] The handheld pipe cutter 10 comprises a body 11. The body 11 defines two opposing arms 11a, 11b. Each of the two opposing arms 11a, 11b extends from the rest of the body 11. Each of the two opposing arms 11a, 11b has a distal section 11a', 11b' which is distally located from the point of attachment of the arm 11a, 11b to the rest of the body 11.
[0114] The two opposing arms 11a, 11b are spaced apart so as to define a volume 12 therebetween for receiving a portion of a pipe P (see Figure 3). The longitudinal axis of the pipe P when received in the volume 12 aligns with an axis of the volume 12.
[0115] The distal sections 11a', 11b' define an opening O therebetween for inserting the pipe P into the volume 12. The pipe P may be inserted into the volume 12 by translating the pipe P in a direction perpendicular to its longitudinal axis.
[0116] The handheld pipe cutter 10 further comprises a blade 13 which protrudes into the volume 12. The blade 13 is suitable for cutting the portion of the pipe P when the pipe P is received in volume 12. The blade 13 is fixedly mounted to the body 11 such that it extends past the body 11 into the volume 12.
[0117] The blade 13 is located in the body 11 such that it extends between the two opposing arms 11a, 11b.
[0118] The handheld pipe cutter further comprises two resizers 15a, 15b. The resizers 15a, 15b are disposed on opposite sides of the volume 12. One of the resizers 15a is disposed on one of the two opposing arms 11a. The other resizer 15b in disposed on the other of the two opposing arms 11b.
[0119] Resizer 15a comprises a pin 15a'. The pin 15a' is received in a bracket formed in the body 11 to thereby secure the resizer 15a relative to the body 11.
[0120] Similarly, resizer 15b comprises a pin 15b'. The pin 15b' is received in a bracket formed in the body 11 to thereby secure the resizer 15b relative to the body 11.
[0121] Each of the resizers 15a, 15b may be rotated about the pins 15a', 15b' within the brackets of the body 11 so as to transition the resizers 15a, 15b between their retracted configurations (as shown in Figure 1) and extended configurations (as shown in Figure 2).
[0122] The rotation axis of each resizers 15a, 15b is coincident with a longitudinal axis of pins 15a', 15b'. Each of the pins 15a', 15b' comprise a slot which functions as an engaging means for engaging a portion of a tool, such as a screwdriver.
[0123] Each resizer 15a, 15b comprises a first portion 16a, 16b. The first portions 16a, 16b are curved and concave. The first portions 16a, 16b of each resizer 15a, 15b are flush with the surrounding portions of the body 11 and have the same radius of curvature as the surrounding portions of the body 11.
[0124] In Figure 1, each of the resizers 15a, 15b are in a retracted configuration. In this configuration, the first portions 16a, 16b are oriented to define a surface of the volume 12. Accordingly, in the retracted configuration, the first portions 16a, 16b abut the portion of the pipe P when the pipe is received in the volume 12.
[0125] The volume 12 has a dimension D which corresponds to a direction along the line connecting the resizers 15a, 15b.
[0128] As shown in Figure 1, the resizer 15a has a retracted configuration in which the first portion 16a of the resizer 15a is oriented to define a surface of the volume 12. The resizer 15b has a retracted configuration in which the first portion 16b of the resizer 15b is oriented to define a surface of the volume 12. When both of the resizers 15a, 15b are in their retracted configurations, the dimension D of the volume 12 has a retracted length. In this example, the retracted length is about 22mm.
[0129] The handheld pipe cutter 10 further comprises a securer 14. A first end of the securer 14 is pivotally connected to the distal section 11a' of the arm 11a by a pivot 14a.
[0130] A second, opposite end of the securer 14 comprises a hook 14b. The hook 14b is configured to snap-fit with a corresponding pin 11b" disposed on the distal section 11b' of the arm 11b.
[0131] As shown in Figure 1, the securer 14 has an open configuration in which the securer 14 does not connect the distal sections 11a', 11b' of the two opposing arms 11a, 11b. As shown in Figure 2, the securer 14 has a closed configuration in which the securer 14 connects the distal sections 11a', 11b' of the two opposing arms 11a, 11b.
[0132] To facilitate easy transitioning of the securer 14 between the open configuration and the closed configuration, the securer 14 further comprises a tab 14c disposed on the second end of the securer 14. The tab 14c may manipulated by a finger or thumb of the user of the handheld pipe cutter 10.
[0133] Reference is now made to Figure 2. Figure 2 shows a front view of a handheld pipe cutter 10 according to the present disclosure, in which each of the resizers 15a, 15b are in the extended configuration.
[0134] As shown in Figure 2, the resizers 15a, 15b have been rotated about their rotation axes such that a second portion 17a, 17b of each resizer 15a, 15b is orientated to extend into the volume 12. In this configuration, the second portions 17a, 17b are oriented to define a surface of the volume 12. Accordingly, in the extended configuration, the second portions 17a, 17b abut the portion of the pipe P' (see Figure 5) when the pipe is received in the volume 12.
[0135] When both of the resizers 15a, 15b are in their extended configurations, the dimension D of the volume 12 has an extended length. In this example, the extended length is about 15mm.
[0136] The user may achieve this rotation by engaging a screwdriver or other similar tool with the slot of each pin 15a', 15b' and manually rotating each resizer 15a, 15b in turn.
[0137] In the extended configuration, the first portion 16a, 16b of each resizer 15a, 15b is orientated into the two opposing arms 11a, 11b of the handheld pipe cutter 10.
[0139] As shown in Figure 2, each of the resizers 15a, 15b is asymmetric about a plane that bisects the first portion 16a, 16b and the second portion 17a, 17b such that the resizers 15a, 15b are rotationally asymmetric about their rotation axis.
[0140] Figure 2 shows the securer 14 in the closed configuration, the securer 14 connects the distal section 11a', 11b' of each arm 11a, 11b together such that the two arms 11a, 11b are urged towards each other.
[0141] Reference is now made to Figures 3 and 4. Figure 3 shows a front view of a handheld pipe cutter 10 according to the present disclosure, in which each of the resizers 15a, 15b are in the retracted configuration and a pipe P is inserted in the volume 12. Figure 4 shows a perspective view of a handheld pipe cutter 10 according to the present disclosure, in which each of the resizers 15a, 15b are in the retracted configuration and a pipe P is inserted in the volume 12.
[0142] The first portion 16a, 16b of each resizer 15a, 15b abuts the portion of the pipe P received within the volume 12.
[0143] The first portion 16a, 16b of each resizer 15a, 15b is flush with the surrounding portions of the body 11 such that the surrounding portions of the body 11 abut the portion of the pipe P.
[0145] As shown in Figure 4, the pipe P may extend in a longitudinal direction on one or both sides of the handheld pipe cutter 10. As such, the user may grasp a portion of the pipe P other than the portion of the pipe P received within the volume 12 and rotate the handheld pipe cutter 10 relative to the pipe P in order to cut the pipe P.
[0146] As the user rotates the handheld pipe cutter 10 relative to the pipe P, the blade 13 (shown in Figure 3) cuts along a circumferential direction of the pipe P.
[0147] Once the entire circumference of the pipe P has been cut, the user may transition the securer 14 from the closed configuration to the open configuration in order to remove the pipe P from the volume 12.
[0148] Each resizer 15a, 15b extends along the whole length of the body 11 along the axis of the volume 12 but does not extend beyond the body 11 of the handheld pipe cutter 10 along the rotation axis.
[0149] Reference is now made to Figures 5 and 6. Figure 5 shows a front view of a handheld pipe cutter 10 according to the present disclosure, in which each of the resizers 15a, 15b are in the extended configuration and a pipe P' is inserted in the volume. Figure 6 shows a perspective view of a handheld pipe cutter 10 according to the present disclosure, in which each of the resizers 15a, 15b are in the extended configuration and a pipe P' is inserted in the volume.
[0151] The second portion 17a, 17b of each resizer 15a, 15b abuts the portion of the pipe P' received within the volume 12.
[0152] The second portion 17a, 17b of each resizer 15a, 15b extends beyond the surrounding portions of the body 11 such that the immediately surrounding portions of the body 11 do not abut the portion of the pipe P'.
[0154] As shown in Figure 6, the pipe P' may extend in a longitudinal direction on one or both sides of the handheld pipe cutter 10. As such, the user may grasp a portion of the pipe P' other than the portion of the pipe P' received within the volume 12 and rotate the handheld pipe cutter 10 relative to the pipe P' in order to cut the pipe P'.
[0155] As the user rotates the handheld pipe cutter 10 relative to the pipe P', the blade 13 (shown in Figure 5) cuts along a circumferential direction of the pipe P'.
[0156] Once the entire circumference of the pipe P' has been cut, the user may transition the securer 14 from the closed configuration to the open configuration in order to remove the pipe P' from the volume 12.
[0157] Although the above explanation is considered to fully clarify how the present disclosure may straightforwardly be put into effect by those skilled in the art, it is to be regarded as purely exemplary.
[0158] In particular, there are a number of variations which are possible, as may be appreciated by those skilled in the art.
[0159] For example, in the example shown in Figures 1 to 6, the handheld pipe cutter 10 comprises two resizers 15a, 15b disposed on opposite sides of the volume.
[0160] In an alternative example, the handheld pipe cutter may comprise one resizer or three or more resizers. The resizer or resizers may be disposed in any part of the body of the handheld pipe cutter as long as the resizer or resizers may be rotated so as to alter the length of a dimension of a volume.
[0161] In the example shown in Figures 1 to 6, the rotation axis of each of the resizers 15a, 15b is parallel to the axis of the volume 12.
[0162] In an alternative example, the rotation axis of the resizer may be perpendicular to the axis of the volume or orientated at any other angle to the axis of the volume as long as the resizer may be rotated so as to alter the length of a dimension of a volume.
[0163] In another example, in the example show in Figures 1 to 6, each of the resizers 15a, 15b is asymmetric about a plane that bisects the first portion 16a, 16b and the second portion 17a, 17b.
[0164] In an alternative example, the resizer may be eccentrically mounted such that the resizer may be rotated so as to alter the length of a dimension of a volume.
[0165] In the example shown in Figures 1 to 6, the first portion 16a, 16b of each resizer 15a, 15b is curved and concave and the second portion 17a, 17b of each resizer is curved and convex.
[0166] In an alternative example, the first portion and/or the second portion may have a planar surface or an angular surface. The first portion and/or the second portion may have a smooth surface or a non-smooth surface (for example, a corrugated surface). The first portion and the second portion may have a different radius of curvature.
[0167] In the example shown in Figures 1 to 6, in the retracted configuration the first portion 16a, 16b of each resizer 15a, 15b is flush with the surrounding portions of the body 11 and the first portions 16a, 16b have the same radius of curvature as the surrounding portions of the body 11 which are configured to abut the pipe P.
[0168] In an alternative example, in the retracted configuration the surrounding portions of the body which are configured to abut the pipe may extend beyond the first portion of the resizer such that the first portion of the resizer is not configured to abut the pipe in the retracted configuration.
[0169] In a further alternative example, in the retracted configuration the first portion of the resizer may extend beyond the surrounding portions of the body such that the surrounding portions of the body are not configured to abut the pipe. The extent to which the first portion extends beyond the surrounding portions of the body in the retracted configuration may be different to the extent to which the second portion extends beyond the body in the extended configuration.
[0170] By way of further example, in the examples shown in Figures 1 to 6, the dimension D of the volume 12 is perpendicular to the axis of the volume 12.
[0171] In an alternative example, the dimension may be orientated at any other angle to the axis of the volume as long as the resizer may be rotated so as to alter the length of a dimension of a volume such that the handheld pipe cutter can be used to cut pipes of different diameters.
[0172] In the example shown in Figures 1 to 6, each of the resizers 15a, 15b has a slot drive for engaging a portion of a tool. In an alternative example, the resizer may have a Phillips drive or a Pozi drive for engaging a portion of a tool. Furthermore, the resizer may have an alternative engaging mechanism that does not require use of a tool.
[0173] Furthermore, in the example shown in Figures 1 to 6, the blade 13 is fixedly mounted to the body 11 of the handheld pipe cutter 10 such that it extends past the body 11 into the volume 12.
[0174] However, in an alternative example, the blade may be in the form of a circular element and may be rotatably mounted in the body of the handheld pipe cutter such that the blade rotates freely when the handheld pipe cutter is rotated relative to the pipe. Furthermore, the blade may be springloaded such that it extends past the body into the volume defined by the body of the handheld pipe cutter.
[0175] In another example, in the example shown in Figure 1 to 6, the blade 13 is located in the body 11 such that it extends between the two opposing arms 11a, 11b.
[0176] However, in an alternative example, the blade may be located in one of the two opposing arms of the handheld pipe cutter, or in the securer of the pipe cutter, or alternatively located so long as the blade may cut a pipe received in the volume.
[0177] Furthermore, in the example shown in Figures 1 to 6, the cutting edge of the blade 13 is perpendicular to the longitudinal axis of the pipe P, P' such that the blade 13 cuts along a circumferential direction of the pipe P, P' as the handheld pipe cutter 10 is rotated relative to the pipe P, P' .
[0178] In an alternative example, the blade may be orientated so as to cut the portion of the pipe received in the volume other than in a circumferential direction. The blade may be located and orientated in any way such that the blade is suitable for cutting the pipe. For example, the blade may be orientated parallel to the longitudinal axis of the pipe such that the blade cuts along a longitudinal direction of the pipe.
[0179] In a further alternative example, the handheld pipe cutter may comprise two or more blades suitable for cutting a pipe received in the volume.
[0180] In an example, in the examples show in Figures 1 to 6, the body 11 comprises two opposing arms 11a, 11b which define the volume 12 therebetween for receiving a portion of a pipe P, P'.
[0181] In an alternative example, the body may not comprise arms. The body may have any form suitable for a handheld pipe cutter so long as the body defines a volume with an axis for receiving a portion of a pipe such that the longitudinal axis of the pipe is aligned with the axis of the volume.
[0182] In another example, in the examples show in Figures 1 to 6, the handheld pipe cutter 10 comprises a securer 14.
[0183] In an alternative example, the handheld pipe cutter may not comprise a securer. The handheld pipe cutter may require the user to hold the pipe within the volume while the pipe is cut. The handheld pipe cutter may have an alternative mechanism for securing the pipe within the volume.
[0184] In a further example, in the example shown in Figures 1 to 6, a first end of the securer 14 is pivotally connected to the distal section 11a' of the arm 11a by a pivot 14a and a second, opposite end of the securer 14 comprises a hook 14b, which is configured to snap-fit with a corresponding pin 11b" disposed on the distal section 11b' of the arm 11b.
[0185] In an alternative example, the securer may be detachable from both of the distal sections of the two arms. The securer may be entirely detachable from both of the two arms.
[0186] In a further alternative example, the securer may comprise a clip and/or a hook and/or a latch.
[0187] In a further example, in the example shown in Figures 1 to 6, the securer 14 is a single element.
[0188] In an alternative example, the securer may comprise two or more elements, each of which may be fixedly connected to the distal section of at least one of the two opposing arms, entirely detachable from the body of the pipe cutter or otherwise. The securer may comprise two elements, each element pivotally connected at a first end to the distal section of one of the two opposing arms and each configured to snap fit with the other element at a second end.
[0189] By way of further example, in the example shown in Figures 1 to 6, the distal section 11a', 11b' of each of the opposing arms 11a, 11b is the distal-most section of each arm 11a, 11b.
[0190] In an alternative example, the distal sections may be any section of the opposing arms suitable to be connected by the securer such that the two arms are urged towards each other thereby to secure the pipe within the volume.
[0192] In an alternative example, the pipe may have a square cross section, an ellipsoidal cross section, or any other cross section.
[0193] All of the above are fully within the scope of the present disclosure, and are considered to form the basis for alternative examples in which one or more combinations of the above-described features are applied, without limitation to the specific combinations disclosed above.
[0194] In light of this, there will be many alternatives which implement the teaching of the present disclosure. It is expected that one skilled in the art will be able to modify and adapt the above disclosure to suit its own circumstances and requirements within the scope of the present disclosure, while retaining some or all technical effects of the same, either disclosed or derivable from the above, in light of his common general knowledge in this art. All such equivalents, modifications or adaptations fall within the scope of the invention as defined by the appended claims.
1. A handheld pipe cutter, comprising:
a body defining a volume with an axis for receiving a portion of a pipe such that the longitudinal axis of the pipe is aligned with the axis of the volume; and
a blade protruding into the volume for cutting the pipe, wherein:
the body comprises a resizer having a retracted configuration and an extended configuration;
the resizer is configured to be transitioned between the retracted configuration and the extended configuration by a rotation of the resizer about a rotation axis of the resizer; and
in the retracted configuration a first portion of the resizer is oriented to define a surface of the volume such that the volume has a dimension having a first length, and in the extended configuration a second portion of the resizer is oriented to define a surface of the volume such that the dimension of the volume has a second length, the first length being greater than the second length.
2. The handheld pipe cutter of claim 1, wherein the rotation axis of the resizer is parallel
to the axis of the volume.
3. The handheld pipe cutter of claim 1 or 2, wherein the resizer is asymmetric about
the rotation axis of the resizer.
4. The handheld pipe cutter of any preceding claim, wherein the first portion is concave
and the second portion is convex.
5. The handheld pipe cutter of any preceding claim, wherein the first portion and/or
the second portion is circular.
6. The handheld pipe cutter of any preceding claim, wherein the resizer is elongate along
the rotation axis.
7. The handheld pipe cutter of any preceding claim, wherein the resizer extends along
the whole length of the body along the axis of the volume.
8. The handheld pipe cutter of any preceding claim, wherein the body further comprises
another resizer having a retracted configuration and an extended configuration, wherein
the another resizer is configured to be transitioned between the retracted configuration
and the extended configuration by a rotation of the another resizer about a rotation
axis of the another resizer, wherein in the retracted configuration a first portion
of the another resizer is oriented to define a surface of the volume such that the
dimension of the volume has a third length, and wherein in the extended configuration
a second portion of the another resizer is oriented to define a surface of the volume
such that the dimension of the volume has a fourth length, the third length being
greater than the fourth length.
9. The handheld pipe cutter of claim 8, wherein the resizer and the another resizer are
disposed on opposite sides of the volume.
10. The handheld pipe cutter of any preceding claim, wherein the dimension of the volume
is perpendicular to the axis of the volume.
11. The handheld pipe cutter of any preceding claim, wherein the body comprises two opposing
arms, the two arms defining the volume therebetween for receiving the portion of a
pipe, and wherein the resizer is disposed on one of the two opposing arms.
12. The handheld pipe cutter of any preceding claim, wherein in the retracted configuration
the first portion of the resizer is flush with the surrounding portions of the body.
13. The handheld pipe cutter of any preceding claim, wherein the first portion has the
same radius of curvature as a surrounding portion of the body which is configured
to abut the pipe.
14. A method of resizing a handheld pipe cutter comprising a body defining a volume for
receiving a portion of a pipe, the method comprising:
transitioning a resizer between a retracted configuration and an extended configuration by rotating the resizer about a rotation axis of the resizer, wherein:
in the retracted configuration a first portion of the resizer is oriented to define a surface of the volume such that the volume has a dimension having a first length, and in the extended configuration a second portion of the resizer is oriented to define a surface of the volume such that the dimension of the volume has a second length, the first length being greater than the second length.
15. The method of claim 14, wherein the handheld pipe cutter is the handheld pipe cutter
of any one of claims 1 to 13.