Safety utility knife

Details Safety utility knife Safety utility knife

1994-04-18

1995-06-27

Payer, Hwei Siu

Cutlery

Sheathed

Sliding blade

30125, 30335, B26B 108

Patent

active

054268559

ABSTRACT:
An improved safety utility knife has a hollow handle and a blade which is normally retracted within the handle, but can be extended by squeezing an operating lever. The lever is connected to the blade holder by a toggle linkage having a rearmost pin secured in a discrete support whose position is adjustable. A thumbscrew threaded into the support enables one to adjust the position of the support from outside the handle, and thus change how far the blade protrudes from the handle when the operating lever is fully depressed.

REFERENCES:
patent: 3577637 (1971-05-01), Braginetz
patent: 3593417 (1971-07-01), West et al.
patent: 3872591 (1975-03-01), Quenot
patent: 4277888 (1981-07-01), Szabo
patent: 4683656 (1987-08-01), Peyrot et al.
patent: 4713885 (1987-12-01), Keklak et al.
patent: 4757612 (1988-07-01), Peyrot
patent: 4761882 (1988-08-01), Silverstein
patent: 5303474 (1994-04-01), Keklak et al.

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