Folding knife with positive lock

Details Folding knife with positive lock Folding knife with positive lock

1989-05-08

1990-08-14

Yost, Frank T.

Cutlery

Sheathed

Pivoted blade

30159, 30160, B26B 104

Patent

active

049475525

ABSTRACT:
A folding knife with positive lock for maintaining the knife blade selectively within the handle case and in open position. A spring urged foot engages appropriate locking notches on the blade for open and closed positions to render the blade immobile in either position. A thumb actuated rocker (several embodiments are disclosed) releases the foot from contact with the notch and out of the path of blade rotation. In an alternate form a pull ring may be used as the lock release. A positive stop on the knife blade abuts the handle case when the blade is in closed position to facilitate movement to its open position when the foot has been removed from the closed locking notch.

REFERENCES:
patent: 458664 (1891-09-01), Scholz
patent: 1075519 (1913-10-01), Tillmans
patent: 1512689 (1924-10-01), Hermann
patent: 1521778 (1925-01-01), McLay
patent: 4502221 (1985-03-01), Pittman
patent: 4730394 (1988-03-01), Sonner, Jr.

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