Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1997-11-24
2000-11-21
Eley, Timothy V.
Tools
Wrench, screwdriver, or driver therefor
Machine
81 5739, 81 58, 81 60, B25B 1700, B25B 1346, B25B 1300
Patent
active
061486949
ABSTRACT:
A hand held wrench with augmenting means is provided which includes a linkage assembly to join a drive input with an output wrench socket. The linkage assembly consists of a drive link extending from the input socket and coacting with a conversion link extending to a ratchet disposed about the output socket of the device. Rotation of the drive link pivots the conversion link to transfer torque from the input to the output socket. A pawl on the driven link is provided to coact with a ratchet which encircles the output socket. A guide means is disposed in the interior of the housing of the device to coact with the linkage assembly to maintain proper alignment during a torque operation, such that stress and force are substantially reduced or dissipated, if not eliminated, during the operation. Another embodiment of the torque augmenting device is provided which includes a pair of sockets interconnected with a drive link assembly to which a pair of resilient means are operatively associated. This embodiment is well suited for use with an impact type wrench in that the torque augmenting device of the present invention automatically recycles itself for a subsequent torquing operation during the intermittent lulls of the torquing cycle of the impact type wrench.
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