Torque-transmitting tool assembly

Details Torque-transmitting tool assembly Torque-transmitting tool assembly

1981-06-25

1983-04-26

Peters, Jimmy C.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

B25B 1500

Patent

active

043809421

ABSTRACT:
A tool assembly comprising a tool member receivable in a recess formed in a driven member. The tool member comprises a shank element, a plurality of tier elements integrally stacked coaxially thereon, and an apex element. Each of the tier and apex elements comprises first and second torque sections, each of which comprise first and second side surfaces subtending the same predetermined angle, a riser surface interconnecting the side surfaces, and a step surface. The recess in the driven member is characterized by member walls which are drivingly engagable with the side surfaces of the tool member.

REFERENCES:
patent: 961515 (1910-06-01), Montgomery
patent: 2445525 (1948-07-01), Gulden
patent: 3470786 (1969-10-01), Martins
patent: 4191228 (1980-03-01), Fenton
patent: 4258596 (1981-03-01), Bisbing

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