FORM 2
The Patent Act 1970
(39 of 1970)
&
The Patent Rules, 2005

COMPLETE SPECIFICATION
(SEE SECTION 10 AND RULE 13)

TITLE OF THE INVENTION

“PLIER”

APPLICANT DETAILS:-

Name Nationality Address
Gb Tools and Forgings Ltd. Indian 11 Mile Stone Kapurthala Road, Jalandhar, Punjab

The following specification particularly describes and ascertains the nature of this invention and the manner in which it is to be performed:-

FIELD OF INVENTION
[001] The embodiments of this invention relate to a hand tool device for fastening, holding an object and/or wire-stripping. More particularly but not exclusively the embodiments of this invention relate to pliers.

BACKGROUND OF INVENTION
[002] A plier is a hand tool which is used to hold and grip an object during performing a cutting or bending operation on the object. Generally, the existing pliers 100, as shown in Fig. 1, have a pair of levers 102 and 104. Each of the levers 102 and 104 has a first end 102a, 104a and a second end 102b, 104b, respectively. The levers 102 and 104 are connected to each other by a joint 106. The joint 106 is located near the first end 102a and 104a of the levers 102 and 104. A portion of the levers 102 and 104, between the joint 106 and the first ends 102a and 104a defines a clamp unit 108 clamp. Further, a portion of the lever 102 and 104 between the joint 106 and the lower ends 102b and 104b defines a handle unit 116. The clamp unit has a first jaw 110 and a second jaw 112. An inner side of each of the jaws 110 and 112 has grooves 114. The jaws 110 and 112 along with the grooves 114 are used to hold and grip an object.

[003] With the existing type of pliers 100 as discussed above, manipulating objects of smaller size appears to be difficult and requires a skilled labor. For example, if the plier of the type discussed above is used for rotating a small nut or a bolt, the user is required exert force or pressure on the handle unit for the jaws of the clamp unit to grip the nut or the bolt. Thereafter, the user is required to rotate the plier along with the nut or the bolt to tighten or untighten the nut or the bolt. At times, a single rotation of the plier becomes insufficient to achieve the desired tightening or complete removal of the nut or the bolt from an assembly. Further, if the nut or the bolt is small, repeated gripping of the nut or the bolt by the jaws of the clamp unit and inconsistent force or pressure exerted by the user may damage an outer surface of the nut thereby making the whole operation cumbersome.
[004] Further, if the nut is made of a non-metal material, the force or pressure exerted by the user may cause damage both to a threaded inner surface and the outer surface of the nut. Further, with the pliers of the type as discussed above, operations such as wire stripping is also a difficult and cumbersome task at least because of the inconsistent force or pressure exerted by the user during wire stripping which may damage the internal metal component of the wire.
[005] More further, manipulation of smaller size objects for example, turning small size screws using the conventional plier requires the handle of the plier to be adjusted every time according to the size of the screws to maintain the opening of the jaws. Adjusting the handle every time results in loss of time and also demands skilled labor.
[006] Therefore, there is a need for a plier that overcomes the above mentioned disadvantages of the conventional pliers. Further, there is a need for a plier that can be used to grip and manipulate objects of varying sizes without otherwise damaging the object.

OBJECT OF INVENTION
[007] The principal object of this invention is to provide a plier which includes a mechanism to maintain a minimum distance between the jaws during use based on a size of the object being manipulated.
[008] Another object of the invention is to provide a plier which includes a mechanism to strip wires.

BRIEF DESCRIPTION OF FIGURES
[009] This invention is illustrated in the accompanying drawings, throughout which like reference letters indicate corresponding parts in the various figures. The embodiments herein will be better understood from the following description with reference to the drawings, in which:;
[0010] FIG. 1 depicts a perspective view illustrating the conventional plier; and
[0011] FIG. 2 depicts a perspective view of a plier according to the embodiments of the present invention.

DETAILED DESCRIPTION OF INVENTION
[0012] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non - limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
[0013] The embodiments herein achieve holding and manipulating objects of varying sizes and stripping of wires of varying sizes by providing a plier. a Referring now to the drawings, and more particularly to FIG. 2 where similar reference characters denote corresponding features consistently throughout the figures, there are shown preferred embodiments.
[0014] FIG. 2 depicts a perspective view of a plier according to the embodiments of the present invention. The plier 200 includes a first lever 202 and a second lever 204. The levers 202 and 204 may be made of any rigid material. The lever 202 has a first end 202a and a second end 202b. Similarly, the lever 204 has a first end 204a and a second end 204b. The first lever 202 and the second lever 204 are pivotally connected to each other at a joint 206. The first and second levers 202 and 204, respectively, may be connected to each other by a pin or any mechanism which imparts a relative pivotal motion for each of the levers 202 and 204. For example, the levers 202 and 204 may have a through hole configured to house an external pin or one of the levers may be provided with an internal unitary projection and another lever may be provided with a corresponding depression to house and lock the projection provided in the other lever. Further, the joint 206 is located near the first ends 202a and 204a) of the levers 202 and 204, respectively. A portion between the first end 202a and first 204a of the levers 202 and 204, respectively, and the joint 206 defines a clamp unit 208. Further, a portion between the joint 206 and the second end 202b and the second end 204b of the levers 202 and 204 defines a handle unit 218. The clamp unit 208 includes a first jaw 210 and a second jaw 212. An outer surface of the jaw 210 defines a portion that tapers toward the first end 202a of the lever 202 and an outer surface of the jaw 212 defines a portion that tapers toward the first end 204a of the lever 204. A portion of an inner surface of each of the jaws 210 and 212 may be serrated or may be provided with grooves 214. Further, a first notch 216a is provided on the inner surface of the jaw 210 and a second notch 216b is provided on the inner surface of the jaw 212 so that when the jaws 210 and 212 are in direct contact with each other, the notches 216a and 216b are configured to receive and grip a wire.
[0015] Further, the handle unit 218 includes a first handle 220 and a second handle 222. The first and second handles 220 and 22 may be made of any rigid material and may be provided with a cover 230 made of insulating material which will act as an insulator as well as a gripping means for the user.
[0016] Further, one of the handles 220 and 222 is provided with an adjusting nut assembly 224. The adjusting nut assembly 224 includes a nut 226 having an outer surface and a threaded inner surface. The adjusting nut assembly further has a supporting element 228 receivable inside a corresponding receiving element (not shown) defined by an inner surface of one of the handles 220 and 222. In one embodiment, the supporting element 228 and the adjusting nut 226 are unitary member or integral. For example, the nut 226 may be welded onto the supporting element 228. The supporting element 228 is received inside the receiving element, which is a hole, provided in one of the handles 220 and 222 in a threaded manner. Further, the depth of the hole may be substantially equal to a length of the supporting element 228. The depth of the hole may also be equal to total length of the supporting element 228 and the adjusting nut 226.
[0017] In operation, if the plier 200 is used to rotate an object, for example, a nut, the jaws 212 and 214 of the plier 200 are plced near the nut so as to receive the nut there between. Thereafter, the adjusting nut 226 along with the supporting element 228 is positioned by inserting the adjusting nut assembly 224 so that a desired minimum distance between the jaws 212 and 214 is maintained. In this case, the outer diameter of the nut is the desired minimum distance between the jaws 212 and 214. The position of the adjusting nut assembly 224 restricts further minimizing the distance between the jaws 212 and 214 thereby enabling user to exert a consistent force or pressure on the handles 220 and 222 and in turn on the nut.
[0018] Further, in the case where a wire has to be stripped, the wire is received between the notches 216a and 216b provided on the inner surface of each of the jaws 212 and 214. Thereafter, the adjusting nut assembly 224 is positioned so that a desired minimum distance between the jaws 212 and 214 is maintained. The desired minimum distance in this case will be twice the depth of the outer covering of the wire. Thereafter, the wire is stripped along the length. The position of the adjusting nut assembly 224 restricts further minimizing the distance between the jaws 212 and 214 thereby enabling user to exert a consistent force or pressure on the handles 220 and 222 and in turn on the nut.
[0019] In another embodiment, the supporting element 228 of the adjusting nut assembly 224 is configured to receive the nut 226 in a moveable manner. The adjusting nut assembly including any mechanism similar to that explained above without deterring the intended function of the plier 200 is also within the scope of this invention.
[0020] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.

WE CLAIM:-

1. A plier comprising:
a first handle defining a first jaw;
a second handle defining a second jaw, said second handle pivotally moveable relative to said first handle; and
an adjusting nut assembly configured to be received in a receiving element of said first handle, wherein said adjusting nut assembly is adapted to restrict a movement of the second handle towards the first handle thereby defining a minimum distance between said first jaw and said second jaw.

2. The plier according to claim 1, wherein an inner surface of each of said first and second jaws are provided with a notch.

3. The plier according to claim 1, wherein said adjusting nut assembly comprises a supporting element and an adjusting nut mountable on said supporting element.

4. The plier according to claim 3, wherein said supporting element is adapted to be received inside said receiving element in a threaded manner.

5. The plier according to claim 1, wherein said first handle and said second handle are pivotally connected to each other by a pin.

6. The plier according to claim 6, wherein the adjusting nut assembly is provided on a portion of said first handle near the pin.

7. The plier according to claim 2, wherein said notch on each of said first and second jaw is provided near the pin.

8. The plier according to claim 4, wherein said receiving element is a hole.

9. The plier according to claim 8, wherein a length of said supporting element is substantially equal to a depth of the hole.

10. The plier according to claim 1, wherein each of said first and second handles are provided with a insulator cover.

Dated 21th March, 2011
Dr. Kalyan Chakravarthy
Patent Agent

ABSTRACT
A plier 200 for holding and manipulating objects of varying sizes and stripping of wires of varying sizes includes a first lever 202 pivotally connected to a second lever 204 at a joint 206. The lever 202 has a first end 202a and a second end 202b. The lever 204 has a first end 204a and a second end 204b. . A portion between the first end 202a and first 204a of the levers 202 and 204, respectively, and the joint 206 defines a clamp unit 208. Further, a portion between the joint 206 and the second end 202b and the second end 204b of the levers 202 and 204 defines a handle unit 218. The clamping unit 208 has notches 216a and 216b configured to receive and grip a wire. The handle unit 218 has an adjusting nut assembly 224.
FIG. 2