Power wrench

Details Power wrench Power wrench

1976-03-15

1977-12-27

Hafer, Robert A.

Tool driving or impacting

Automatic control of power operated means

Tool advance causing or controlling means

192150, B23Q 5027

Patent

active

040649482

ABSTRACT:
A power wrench in which an output shaft is powered by a motor via a magnetic torque responsive release clutch, and in which a torque non-responsive clutch is connected between the release clutch and the output shaft. Cam teeth which are associated with the release clutch halves are effective to inactivate the torque non-responsive clutch as the driving and driven halves of the latter, during increased torque load, have reached their fully released position. As the release clutch is unloaded there is an angular gap between the cam teeth corresponding to the relative angular displacement arising between the release clutch halves as the load on the release clutch is increased from zero to release level.

REFERENCES:
patent: 2884103 (1959-04-01), Connell
patent: 3091316 (1963-05-01), Huffman
patent: 3194371 (1965-07-01), Rabinow
patent: 3240304 (1966-03-01), Wickersham
patent: 3288258 (1966-11-01), Taylor
patent: 3752278 (1973-08-01), States
patent: 3807539 (1974-04-01), Reed

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