Machine element or mechanism – Gearing – Yieldability in gear trains
Patent
1994-08-10
1996-11-12
Herrmann, Allan D.
Machine element or mechanism
Gearing
Yieldability in gear trains
81 5722, 81467, 464 37, 464 57, F16H 3506, F16H 3510, B25B 2314
Patent
active
055729053
ABSTRACT:
Methods and apparatus are provided for a torque driver including a laterally displaceable gear support member to carry an output spur gear. A biasing assembly biases the output spur gear into engagement with a pinion to which is applied an input torque greater than a desired output torque limit for a threaded fastener such as a nut or screw. A coiled output linkage connects the output spur gear with a fastener adaptor which may be a socket for a nut. A gear tooth profile provides a separation force that overcomes the bias to limit torque at the desired torque limit. Multiple fasteners may be rotated simultaneously to a desired torque limit if additional output spur gears are provided. A gauged selector mechanism is provided to laterally displace multiple driver members for fasteners arranged in differing configurations. The torque limit is selectably adjustable and may be different for fasteners within the same fastener configuration.
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Cate James M.
Herrmann Allan D.
The United States of America as represented by the Administrator
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