Slot-head fastener and driver therefor

Details Slot-head fastener and driver therefor Slot-head fastener and driver therefor

1977-10-19

1978-12-19

Smith, Al Lawrence

Bridges

145 50A, 145 61L, B25B 1500

Patent

active

041301528

ABSTRACT:
The head of fasteners are provided with an inverted T-slot which is engagable by the T-shaped end of a driver for precluding the accidental or unintentional disengagement of the driver from the fastener-head during insertion or removal thereof.

REFERENCES:
patent: 306491 (1884-10-01), Jackman
patent: 1371965 (1921-03-01), York
patent: 1419100 (1922-06-01), Ayotte
patent: 1486718 (1924-03-01), Zygmunt
patent: 1997422 (1935-04-01), Lorenzen et al.
patent: 2566055 (1951-08-01), Daderko et al.
patent: 2672777 (1954-03-01), Dossie
patent: 2792039 (1957-05-01), Wing et al.
patent: 3120251 (1964-02-01), York
patent: 3227015 (1966-01-01), Tremblay
patent: 3396765 (1968-08-01), Ridenour

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