The present invention relates to pliers.
Retaining rings are commonly used as retaining or locking members, such as to retain one or more elements on a shaft or similar circular or cylindrical-shaped body.
Conventionally, pliers or other tools may be used to bias the ends of the retaining rings towards or away from one another. Existing tools, such as pliers, for use in manipulating these retaining rings have a number of drawbacks. For example, pliers exist which have a pair of handles which are hinged, where each handle has a tool tip for engaging the aperture of a retaining ring. The user can place the tool tips into the apertures of a retaining ring and then manipulate the handles to manipulate the retaining ring. In the case of an internal ring, use of the pliers is simple: by gripping the handles and compressing them towards one another, the tool tips move towards one another, thus compressing the internal retaining ring. Manipulation of an external retaining ring is more problematic, however, as it requires the user to separately grip each handle of the pliers and trying to pull then handles apart, all while still keeping the tool tips engaged with the retaining ring. This can be very difficult, both in terms of generating sufficient force to open the retaining ring, to being able to locate the retaining ring on the shaft, to preventing the retaining ring from falling off of the tool.
An improved tool for use in manipulating retaining rings is desired.
Aspects of the invention comprise a tool and methods of configuring and using the tool. In one embodiment, the tool is particularly suited for use in manipulating retaining rings, including both retaining rings of the external and internal varieties. In one embodiment, the tool comprises pliers, and most preferably pliers which can be reversed between first and second modes or configurations, including a first mode or configuration for use in manipulating external retaining rings, and a second mode or configuration for use in manipulating internal retaining rings.
One embodiment of the invention comprises pliers having a reversing mode of operation, comprising a first tool body having a first end and a second end and a tool tip at the first end, a second tool body having a first end and a second end and tool tip at the first end, the first and second tool bodies pivotally connected to one another, a first handle having a first end and a second end, a second handle having a first end and a second end, the first and second handles pivotally connected to one another, and means for selectively connecting the first handle to the second tool body and the second handle to the first tool body in a first mode of operation and the first handle to the first tool body and the second handle to the second tool body in a second mode of operation.
In one embodiment, the means for selectively connecting comprises a selector, such as a rotatable selector. The selector may be configured to selective engage on or more connectors, such as pins, that connect the first and second handles to the first and second tool bodies.
Another embodiment of the invention comprises pliers which comprise: a first tool body having a first end and a second end and a tool tip at the first end, a second tool body having a first end and a second end and tool tip at the first end, the first and second tool bodies pivotally connected to one another in a scissor configuration, the pivotal connection between the first and second ends of the first tool body and the first and second ends of the second tool body, a first handle having a first end and a second end, a second handle having a first end and a second end, the first and second handles pivotally connected to one another, a first pin associated with the first handle, the first pin movable from an unengaged position to an engaged position in which the first pin engages the first end of the first tool body, a second pin associated with the first handle, the second pin movable from an unengaged position to an engaged position in which the second pin engages the second end of the second tool body, a third pin associated with the second handle, the third pin movable from an unengaged position to an engaged position in which the third pin engages the first end of the first tool body, a fourth pin associated with the second handle, the fourth pin movable from an unengaged position to an engaged position in which the fourth pin engages the second end of the first tool body, wherein the pliers are configurable into a first mode of operation when the second and fourth pins are moved to their engaged position while the first and third pins remain in their unengaged position, whereby the first handle is connected to the second end of the second tool body and the second handle is connected to the second end of the first tool body, and wherein the pliers are configurable into a second mode of operation when the first and third pins are moved to their engaged position while the second and fourth pins remain in their unengaged position, whereby the first handle is connected to the first end of the first tool body and the second handle is connected to the first end of the second tool body.
Another embodiment of the invention comprises a method of using pliers comprising the steps of configuring pliers into a first mode of operation by moving a mode selector to a first position, compressing first and second handles of the pliers towards one another to effectuate movement of first and second tool tips of the pliers towards one another, configuring the pliers into a second mode of operation by moving the mode selector to a second position, and compressing the first and second handles towards one another to effectuate movement of the first and second tool tips away from one another.
Further objects, features, and advantages of the present invention over the prior art will become apparent from the detailed description of the drawings which follows, when considered with the attached figures.
In the following description, numerous specific details are set forth in order to provide a more thorough description of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without these specific details. In other instances, well-known features have not been described in detail so as not to obscure the invention.
One embodiment of the invention comprises a tool, and most preferably a tool which is particularly suited for use in manipulating retaining rings, including both retaining rings of the external and internal varieties. In one embodiment, the tool comprises pliers, and most preferably pliers which can be reversed between first and second modes or configurations, including a first mode or configuration for use in manipulating external retaining rings, and a second mode or configuration for use in manipulating internal retaining rings.
One embodiment of the invention will be described with reference to
Referring primarily to
The second tool body 24 has a first end 38 and a second end 40. The second tool body 24 may have a first side, such as a top side, and an opposing side, such as a bottom side. In one embodiment, a retaining ring engaging member is associated with the first end 38. As illustrated, this may again comprise a generally “L”-shaped tip 42, such as where the tip 42 extends outwardly from the first end 38 and then bends towards the bottom side of the second tool body 24, such as at a generally 90 degree angle (e.g. thereby extending generally perpendicular to a plane containing the first tool body 24). The tip 42 is again preferably configured to fit into the aperture of an end of a retaining ring.
The first and second tool bodies 22,24 are movably connected, such as by being pivotally connected. In one embodiment, a pin 44 extends through an aperture each of the first and second tool bodies 22,24. Preferably, the first tool body 22 is pivotally connected to the second tool body 24 between the first and second ends 32,34 of the first tool body 22 and the first and second ends 38,40 of the second tool body 24.
In the preferred configuration, the first and second tool bodies 22,24 are connected in a “scissor” fashion, where they cross one another (such that the first end 32 of the first tool body 22 and the second end 40 of the second tool body 24 are on one side of a longitudinal line through the pliers 20, and the second end 34 of the first tool body 22 and the first end 38 of the second tool body 24 are on the opposite side of that line).
In one embodiment, as illustrated in
The first handle 26 has a first end 46 and a second end 48. The first handle 26 may have a first side, such as a top side, and an opposing side, such as a bottom side. In one embodiment, a grip 50 may be located on the first end 46 of the first handle 26. As described in more detail below, the second end 48 of the first handle 26 is configured to selectively engage the first tool body 22 (such as in one mode of operation) and the second tool body 24 (such as in another mode of operation).
The second handle 28 has a first end 52 and a second end 54. The second handle 28 may have a first side, such as a top side, and an opposing side, such as a bottom side. In one embodiment, a grip 52 may be located on the second end 54 of the second handle 28. As described in more detail below, the second end 54 of the second handle 28 is likewise configured to selectively engage the first tool body 22 (the one mode of operation) and the second tool body 24 (in another mode of operation).
The first and second handles 26,28 are also preferably mounted for movement relative to one another, such as by being pivotally mounted, and most preferably also mounted for pivotal movement relative to the first and second tool bodies 22,24. In one embodiment, the first handle 26 is pivotally mounted to the pin 44, between its first and second ends 46,48. Likewise, the second handle 28 is pivotally mounted to the pin 44, between its first and second ends 52,54. In one embodiment, the first and second handles 26, 28 are located at the top sides of the first and second tool bodies 22,24.
In one embodiment, so configured, the pliers 20 may have a distal end corresponding to the second ends 48,54 of the first and second handles 26,28, and a proximal end corresponding to the first ends 32,38 of the first and second tool bodies 22,24.
As indicated, the first and second handles 26,28 are configured to selectively engage the first and second tool bodies 22,24, such as to effectuate their movement in response to movement of the first and second handles 26,28.
As illustrated in
As best illustrated in
Still referring primarily to
In one embodiment, four pins 60 are provided. A first pin 60A is associated with an aperture through the first handle 26 at its first end 46. A second pin 60B is associated with an aperture through the first handle 26 a location between the mounting of the first handle 26 to the pin 44 and the second end 48. A third pin 60A is associated with an aperture through the second handle 28 at its first end 52. A fourth pin 60D is associated with an aperture through the second handle 28 at a location between the mounting of the second handle 28 to the pin 44 and its second end 54. In one embodiment, each pin 60 is orientated so that the head 70 is positioned between the top of the first or second handle 26,28 and the bottom 64 of the selector 30, with the shank 68 of the pin 60 extending through its corresponding aperture in the handle 26,28. It is noted that while the head 70 of each pin 60 may be enlarged (compared to the shank), the pins 60 may have other configurations.
In one embodiment, a means is provided for biasing each pin 60 to a retracted or dis-engaged position. In one embodiment, this means may comprise a spring 72 which is positioned on the shank 68 between the head 70 and the first or second handle 26,28 with which the pin 60 is associated.
As described in more detail below, the selector 30 is configured to selectively engage the pins 60, such as to change their positions. In one embodiment, the bottom 64 of the selector 30 has a recess or inset 74 in a portion thereof, whereby the selector 30 can engage the pins 60 in a first position where they contact a first portion of the bottom 30 of the selector and whereby the selector 30 can engage the pins 60 in a second position where they contact the second, recessed portion 74 thereof. The recess or inset 74 may extend approximately 180 degrees around the bottom 64 of the selector 30 (whereby the first and second portions of the bottom 64 of the selector 30 are located approximately 180 degrees apart), and may have tapered or ramped portions comprising a transition between the recessed or inset portion and the non-recessed portion of the selector 30. As detailed below, when the first portion of the bottom 64 of the selector 30 engages the pins 60, those pins are pressed downwardly into engagement with the corresponding tool body 22,24, but when pins 60 are associated with the second, recessed portion 74 of the bottom 64 of the selector 30, the pins are not pressed downwardly into engagement with the corresponding tool body 22,24.
In one embodiment, the first pin 60A may selectively engage the first tool body 22, such as by extending into an aperture at the first end 32 thereof. The second pin 60B may selectively engage the second tool body 22, such as by extending into an aperture at the second end 40 thereof. Likewise, the third pin 60C may selectively engage the second tool body 24, such as by extending into an aperture at the first end 38 thereof, and the fourth pin 60D may selectively engage the first tool body 22, such as at the second end 34 thereof.
In one embodiment, second ends 48,54 of the first and second handles 26,28, may be biased away from one another. For example, a spring 80 may be positioned between the first and second handles 26,28 at a point distal of their mounting to the pin 44.
In one embodiment, the pliers 20 may comprise one or more alignment elements, such as a secondary mount 82. The secondary mount 82 may have a top strut 84 and a bottom strut 86 which are vertically offset, such as a via a support 88.
The support 88 may be located between the first end 32 of the first tool body 22 and the first end 38 of the second tool body 24. The top strut 84 may extend towards the distal end of the pliers 20, with the pin 44 passing there though, and where the top strut 84 is positioned between the top of the first and second handles 26,28 and the bottom 64 of the selector 30. The bottom strut 86 may extend towards the distal end of the pliers 30, with the pin 44 passing therethrough, and where the bottom strut 86 is positioned at the bottom side of the first and second tool bodies 22,24.
The first and second struts 84,86 may also be connected, such as at free ends thereof (generally opposite the support 88) such as by a connector, such as a pin 90. The pin 90 may be positioned between the second ends 34,40 of the first and second tool bodies 22,24 (towards the distal end of the pliers 20 from the pin 44).
In one embodiment, the pin 44 may have a shank with a head at one end and an opposing free end. At least a portion of the shank may be threaded. The pin 44 may be extended through the secondary mount 82, the first and second tool bodies 22,24 and the first and second handles 26,28, such as from the bottom side of the pliers 20. A nut 92 may be threaded into engagement with the free end of the pin 44, such as at the top 62 of the selector 30, thereby joining all of these elements. In one embodiment, the pin 44 may extend directly through these elements of the pliers 20, and in other embodiment, the pin 44 may extend through a first sleeve 94 and a second sleeve 96 (or one sleeve), where the first and second tool bodies 22,24 and/or first and second handles 26,28 are associated with the sleeves. Further, as illustrated, a spring 98 or other means for biasing may be provided between the pin 44 and the nut 92 (such as between the head of the pin 44 and the second tool body 24 for biasing the elements of the tool upwardly towards the nut 92).
Aspects of use and operation of the pliers 20 will now be described.
A user first selects a desired mode or configuration of operation of the pliers 20, such as illustrated in
In this position, the selector 30 pushes the first pin 60A (which is associated with the first handle 26) into engagement with the aperture at the first end 32 of the first tool body 22, and pushes the third pin 60C (which is associated with the second handle 28) into engagement with the aperture at the first end 38 of the second tool body 24. At the same time, the second pin 60B and fourth pin 60D are not engaged by the selector 30 (e.g., the springs 80 maintain those pins in a retracted position so that they don't engage the first and second tool bodies 22,24, with the heads of those pins 60B,60D located in the recess 74 in the bottom 64 of the selector 30).
The user engages the tips 36,42 of the pliers 20 with an external retaining ring, such as inserting the tips into the apertures in the ends of the external retaining ring. The user then squeezes the handles 26,28 towards one another at their second or gripping ends 48,54. This causes the first ends 32,38 of the first and second tool bodies 22,24 to move away from one another as the first and second tool bodies 22,24 pivot about the pin 44. The force applied by the user to the handles 26, 28 causes the ends of the external retaining ring to move away from one another, increasing the internal dimension of the external retaining ring, and thus allowing the user to place the external retaining ring over a shaft or other body.
Most importantly, the pliers 20 permit a user to select a second mode or configuration of operation, as illustrated in
In one embodiment, means may be again provided for indicating that the pliers 20 are in the second mode of operation. For example, as illustrated in
In the second position, the selector 30 pushes the second pin 60B (which is associated with the first handle 26) into engagement with the aperture at the second end 34 of the first tool body 22, and pushes the fourth pin 60D (which is associated with the second handle 28) into engagement with the aperture at the second end 40 of the second tool body 24), thus connecting the first handle 26 to the second tool body 24 and the second handle 29 to the first tool body 22. At the same time, the first pin 60A and third pin 60C are not engaged by the selector 30, as the heads 70 thereof are located in the recess 74 in the bottom 64 of the selector 30 (e.g., the springs 80 maintain those pins in a retracted position so that they don't engage the first and second tool bodies 22,24).
The user engages the tips 36,42 of the pliers 20 with an internal retaining ring, such as by inserting the tips into the apertures in the ends of the internal retaining ring. The user then squeezes the handles 26,28 towards one another at their second or gripping ends 48,54. This causes the first ends 32,38 of the first and second tool bodies 22,24 to move towards one another as the first and second tool bodies 22,24 pivot about the pin 44. The force applied by the user to the handles 26,28 causes the ends of the internal retaining ring to move towards one another, reducing the exterior dimension of the internal retaining ring, and thus allowing the user to place the internal retaining ring in a desired location.
Various aspect of the invention, including benefits thereof, will now be appreciated. Most importantly, the pliers 20 have first and second modes or configurations for use in manipulating internal and external retaining rings. In the preferred embodiment, in one mode of operation, the tool bodies or tips move in a first direction relative to one another (such as towards one another), and in a second mode of operation, the tool bodies or tips move in a second direction relative to one another (such as away from one another). Most preferably, the movement of the tool bodies or tips in completely different directions in the two modes of operation is effectuated even though in both instances, the user is moving the handles in the same manner—and preferably by squeezing the handles towards one another. Thus, the pliers 20 allow the user to cause the tool bodies or tips to move in different modes (and different relative directions) while the user simply squeezes the handles together in both modes of operation. This represents a significant advantage over tools of the prior art where the user is required to move the handles in different directions relative to one another in order to move the tool tips in different directions. This, for example, avoids the user having to try and force the handles apart from one another in certain modes of use.
Another advantage of the invention is the ability of the user to select the different modes of operation, such as by manipulation of a selector. As one aspect of the invention, the user does not need to manually connect the handles to the first and second tool bodies in different configurations. Instead, by merely turning or manipulating the selector, the connections of the handles to the tool bodies are modified.
The invention may have other configurations. For example, principles of the invention might be applied to other tools, such as pliers that have tool bodies or tips that have different configurations.
As indicated, in one embodiment, the pliers include a means for selection a mode or configuration of operation of the pliers (and more particularly, where the selection controls the connection of the handles to the first and second tool bodies into different configurations). As indicated, that selector may comprise a rotatable selector. However, other means might be utilized. For example, a toggle type selector might be utilized (which can be pressed, rotated or moved forwardly to engage the first and third pins 60A,60C but not the second and fourth pins 60B,60D or pressed, rotated or moved rearwardly to engage the second and fourth pins 60B,60D but not the first and third pins 60A,60C).
In another embodiment, the first pin 60A and third pin 60C might be located at the top of the pliers 20 and the second pin 60B and fourth pin 60D might be located at the bottom of the pliers. A push-button may extend over the pins at the top and bottom side of the pliers, where when the push-button is pressed down, it pushes the first and third pins 60A,60C into engagement, but causes the second and fourth pins 60B,60D to not be engaged (to be retracted), and vice versa.
Of course, in some embodiments, the means for selecting might be manual, such as where the user is required to engage each pin manually (for example, the pins could be threaded and the user could be require the turn the pins to that they screw into or out of engagement with the first and second tool bodies 22,24).
It will be understood that the above described arrangements of apparatus and the method there from are merely illustrative of applications of the principles of this invention and many other embodiments and modifications may be made without departing from the spirit and scope of the invention as defined in the claims.
This application claims priority to U.S. Provisional Application Ser. No. 62/704,260, filed Apr. 30, 2020, and incorporate by reference said application as if set forth fully herein.
Number | Date | Country | |
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62704260 | Apr 2020 | US |