US 6,718,637 B1 · Automatic safety knife

Abstract

The present invention has a safety hood which is pivotally mounted to the body of the knife at the front end. The body is pivotally mounted to a spine at the back end. The blade is removably mounted on the spine such that the hood covers the blade when the knife is closed. The hood is biased closed and has a latch to hold it closed unless the latch is released. The user depresses a button, which moves the latch, releasing the hood to push up when the user presses the hood against a working surface. The hood's rotation, and therefore the about of blade exposed, is controlled by an adjustable depth assembly. The adjustable depth assembly has multiple settings, allowing the user to control the cutting depth of the knife.

Claims11

Dependent claims

A utility knife having an adjustable depth assembly, said utility knife comprising:

a spine;
a body movably attached to the spine;
a blade mounted on the spine;
a pivotal safety hood mounted to the body having a safe position covering the blade and an operating position exposing the blade;
said adjustable depth assembly comprising a movable positive stop mounted behind the pivotal safety hood;
and
said movable positive stop having a plurality of locked positions, wherein each locked position stops a rearward rotation of the pivotal safety hood at a different cutting depth, thereby providing an adjustable cutting depth for the blade.

4 more elements

Dependencies are inferred from the claim text.

Automatic safety knife

Life of this patent

Automatic safety knife

Life of this patent

Abstract

Claims11