Tools – Wrench – screwdriver – or driver therefor
Patent
1995-03-03
1996-08-20
Little, Willis
Tools
Wrench, screwdriver, or driver therefor
81 5734, B25B 1300
Patent
active
055468330
ABSTRACT:
A wrench (10) is disclosed for breaking a threaded connection between first and second pipe sections (14, 16) having wrench flats (18). A first jaw (20) is pivotally secured to a first torque arm (22) and slid over the wrench flats of the first pipe section. A second jaw (54) is pivotally secured to a second torque arm (56) and slid over the wrench flats of the second pipe section (16). A threaded rod (70), with a handle (72) thereon, is threaded between the distal ends of the torque arms so that the distal ends of the torque arms can be brought together by rotating the threaded rod with the handle to break the connection. The jaws (20, 54) are interchangeable and jaws of different size can be used to fit pipe sections of different diameter. Further, the jaws have a plurality of pivot pin apertures (26-38) around their circumference to permit the jaws to be adjusted on the torque arms to position the jaw on the wrench flats of the pipe sections. A fine adjustment is provided by using a pair of pivot pin apertures (46, 48) on the torque arms.
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patent: 5386746 (1995-02-01), Hawk
Harrison Greg T.
Hise Bradley W.
Holdeman R. Brian
Kohman Fred H.
Little Willis
The Charles Machine Works, Inc.
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