Shears for cutting water pipe and the like

[0002] The present invention relates generally to a cutting implement, and more particularly to a pair of shears for cutting the water pipe and the like.

[0003] The conventional water pipe shears are handy tools for cutting the water pipe of a rigid plastic material; nevertheless they lack certain features enabling the shears to be used with ease.

[0004] The primary objective of the present invention is to provide a pair of shears, which can be used with ease to cut the water pipe.

[0005] In keeping with the principle of the present invention, the foregoing objective of the present invention is attained by the water pipe shears comprising a primary handle, a secondary handle, a movable jaw, a connection rod, and a push claw. The push claw is actuated by the secondary handle to push the movable jaw to move toward a fixed jaw, thereby resulting in severance of a pipe which is placed between the movable jaw and the fixed jaw.

[0006] The foregoing objective, features, functions, and advantages of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of a preferred embodiment of the present invention with reference to the accompanying drawings.

[0007] FIG. 1 shows a perspective view of the preferred embodiment of the present invention.

[0008] FIG. 2 shows an exploded view of the preferred embodiment of the present invention.

[0009] FIG. 3 shows a schematic view of the preferred embodiment of the present invention in action.

[0010] FIG. 4 shows another schematic view of the preferred embodiment of the present invention in action.

[0011] FIG. 5 shows another perspective view of the preferred embodiment of the present invention.

[0012] As shown in all drawings provided herewith, a water pipe shears of the preferred embodiment of the present invention comprise a primary handle 10, a secondary handle 20, a movable jaw 30, a connection rod 40, and a push claw 50.

[0013] The primary handle 10 is provided at one end with a grip 11, and at another end with a fixed jaw 12 which is in turn provided with a through slot 13. The slot 13 is provided with a stop edge 14.

[0014] The secondary handle 20 is provided at one end with a grip 21 which is opposite to the grip 11 of the primary handle 10 and is provided at the free end thereof with a restraining ring 22. The secondary handle 20 is fastened pivotally at another end to the fixed jaw 12 of the primary handle 10.

[0015] The movable jaw 30 is pivoted between the fixed jaw 12 of the primary handle 10 and the grip 11 of the primary handle 10 such that a blade 31 of the movable jaw 30 is opposite in location to the fixed jaw 12 of the primary handle 10. The movable jaw 30 is provided with a toothed portion 32 and a stop projection 33 in cooperation with the stop edge 14 of the primary handle 10.

[0016] The connection rod 40 is pivoted at one end with the secondary handle 20 and at another end with the lower end of the movable jaw 30.

[0017] The push claw 50 is pivoted to the secondary handle 20 in conjunction with a cantilever spring 51 such that the push claw 50 is located between the fixed jaw 12 of the primary handle 10 and the connection rod 40. The push claw 50 is intended to push the movable jaw 30 to move progressively toward the fixed jaw 12 of the primary handle 10. The push claw 50 is actuated by the secondary handle 20 to urge the toothed portion 32 of the movable jaw 30, thereby resulting in the progressive movement of the movable jaw 30 toward the fixed jaw 12 so as to cut a water pipe “A” which is placed between the fixed jaw 12 and the movable jaw 30, as illustrated in FIG. 3. The pipe “A” is cut jointly by the scissor-like action of the fixed jaw 12 and the cutting edge of the blade 31 of the movable jaw 30.

[0018] As illustrated in FIG. 4, when the secondary handle 20 is moved in the direction away from the primary handle 10, the connection rod 40 is actuated to pull the lower end of the movable jaw 30, thereby causing the blade 31 of the movable jaw 30 to move away from the fixed jaw 12 of the primary handle 10. The maximum angle is formed between the fixed jaw 12 and the blade 31 of the movable jaw 30 at the time when the stop projection 33 of the movable jaw 30 is stopped by the stop edge 14 of the primary handle 10.

[0019] As shown in FIG. 5, the primary handle 10 and the secondary handle 20 are restrained by the restraining ring 22 which is attached to the free end of the grip 21 of the secondary handle 20.

[0020] The embodiment of the present invention described above is to be regarded in all respects as being merely illustrative and not restrictive. Accordingly, the present invention may be embodied in other specific forms without deviating from the spirit thereof. The present invention is therefore to be limited only by the scope of the following appended claim.