Driver for high torque fastener

Details Driver for high torque fastener Driver for high torque fastener

1977-05-09

1979-03-27

Smith, Gary L.

Bridges

403354, B25B 1500

Patent

active

041460731

ABSTRACT:
There is disclosed a novel driving implement for an arcuate slot, defined by two cylindrical sidewalls, in the head of a fastener. A torque applying shaft is provided with a new moon-shaped bit which may also be described as being a modified crescent-shaped configuration wherein the extremities of the crescent are truncated, the said driving bit being comprised of two vertical cylindrical surfaces converging at both ends.

REFERENCES:
patent: 1361059 (1920-12-01), Hoff
patent: 2015613 (1935-09-01), Baumgarten
patent: 3120251 (1964-02-01), York
patent: 3540342 (1970-11-01), Vaughn
patent: 4037514 (1977-07-01), Lliteras

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