Safe utility knife

Details Safe utility knife Safe utility knife

1986-12-08

1987-12-22

Watts, Douglas D.

Cutlery

Sheathed

Sliding blade

30 2, 30335, B26B 108

Patent

active

047138858

ABSTRACT:
A utility knife utilizing a standard commercial blade as a handle forming a guide for a blade slide and also serving as a housing for the blade in a retracted safe position. The blade slide is advanced and retracted by a toggle linkage connected with an operating lever pivotally attached to the handle and biased by a spring to a position causing automatic retraction of the blade into the housing when the lever is released. When the lever is grasped and pulled toward the handle for advancing the blade to a use position, the toggle linkage assumes a straight line dead center slide and blade locking position.

REFERENCES:
patent: 3024670 (1962-04-01), Over et al.

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