B - Operations – Transporting – 25 – B
Patent
B - Operations, Transporting
25
B
B25B 23/143 (2006.01) B25B 23/142 (2006.01)
Patent
CA 2065660
A torque control mechanism for wrenches and the like in which a pivot block has one end rockably engaging a force transmission member, an axially movable plunger has one end rockably opposing a second end of the pivot block, a ball screw carried by the plunger has a control ball element engaging the second end of the pivot block, a balance cam carried by the plunger provides seat for a coiled compression spring having its opposite end engaged by an antifriction device permitting the spring to turn for adjustment purposes, a rotatably adjustable transfer screw engages the antifriction device and is threaded through a stop adjusting nut mounted in the distal end portion of tubular housing for the mechanism. The distal end portion of the transfer screw is secured in an end cap fixed within a distal end of a handle mounted on the housing; and the components of the mechanism provide a continuous passage therethrough for respective adjustment wrenches to be applied from the handle end of the tool to respectively the ball screw, a ball screw lock screw, and to said balance cam.
Green Talmage O.
Larson John K.
Cassan Maclean
Precision Instruments Inc.
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