Screwdriver and joining device

Details Screwdriver and joining device Screwdriver and joining device

1979-11-13

1985-07-02

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

81456, 81458, 81461, 411407, B25B 1500

Patent

active

045260710

ABSTRACT:
A tool in the nature of a screwdriver engageable with the end of a screw or other type of fastener, the implement and fastener being so arranged that, when engaged for use the hazard of inadvertent disengagement is reliably precluded.

REFERENCES:
patent: 66585 (1867-07-01), Harvey
patent: 1939268 (1933-12-01), Krull
patent: 2745304 (1956-05-01), Cornelius
patent: 3236275 (1966-02-01), Smith
patent: 4025140 (1977-05-01), Matys
patent: 4033244 (1977-07-01), Jacobson

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