Abstract: A torque driver includes a driver arm with a pivot mounting hole formed adjacent one end, a driver spindle mounting slot or sockets spaced from the pivot mounting hole providing multiple mounting positions for retaining the driver spindle, and a locking detent. A locking element engages the locking detent, a load applicator generates a selected load onto the locking element, and a handle is pivotally attached to the driver arm at the pivot mounting hole and has finger groove for applying a tightening force. The locking detent, the locking element and the load applicator cooperate to permit relative movement between the driver arm and the handle when the tightening force applied at the finger groove is at a pre-determined value.

Abstract: The invention comprises a ratchet style open end wrench which incorporates an assembly to provide a torqueing function and ratchet effect. The assembly includes a wrench body capable of providing torque delivery through two or more rotating cylindrical cams which contact the nut. The cylindrical cams then rotate when reversing the direction of the wrench assembly so that a cutout portion of the cylindrical cams allows the nut points to pass by. In one embodiment, the direction of the ratchet effect is reversible by a reversing arc wire which is activated by use of a lever.

Abstract: Disclosed is a sectionless length adjustment mechanism for the shank of a tool (e.g., screwdriver) and for releasably locking the shank in any one of a plurality of positions relative to the handle. In one embodiment the mechanism comprises a sleeve having a front flared end, a spring anchored in the sleeve, a shell including two opposite bars on its surface, and a nut secured to the sleeve. Pulling the shank forward will move the bars outward forward along the flared end to expand the spring. Pushing the shank rearward will move the bars inward rearward along the flared end to compress the spring. Stopping sliding will lockingly engage the shank. Loosening the nut will move the shell forward and expand the spring until the shank is free to slide with the bars disposed at a mouth of the flared end and disengaged from the shank.

Abstract: Disclosed herein is a portable pipe wrench comprising a relatively stationary main frame including a rearwardly extending elongate handle and a forwardly disposed power train having a pair of roughened spurs for securely engaging and rotating a pipe segment and a nipple which is powerably actuatable by a suitable external torque-producing driver means. The portable pipe wrench also comprises a relatively movable jaw member slidably associated with the frame member and including a pair of idler wheels cooperating with the two spurs to rotatably manipulate the securely engaged pipe and further comprises a locking-adjusting assembly for the movable jaw relative to the main frame and the pipe. The main frame, the movable jaw, and the locking-adjusting assembly include several novel features which facilitate the task of securely engageably grasping and rotating the threaded pipe segment.