Utility knife
First Claim
Patent Images
1. A utility knife comprising a handle housing having an upper and lower edge (32);
- a slide mounted within said housing for longitudinal displacement;
a knife blade having a cutting edge and connected to said slide;
retraction means (18) located within said housing for retracting said slide and said knife blade (16) from a cutting position into a protected position in the handle housing;
a friction disk (22) turnably mounted within said handle housing (10) and extending out of said handle housing (10) on said cutting-edge side of said knife blade (16);
the axis of rotation (24) of said friction disk extending substantially perpendicularly to the plane of said blade; and
a driver member for advancing said slide (12) together with said knife blade (16) into the cutting position thereof against the force of the retraction means (18).
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Abstract
A utility knife has a handle housing within which a slide bearing a knife is mounted for longitudinal displacement. Retraction means act on the knife to move it into a protected position. Turnably mounted within the housing (10) is a friction disk (22) which extends out of the handle housing (10) on the cutting-edge side of the knife blade (16). The axis of rotation (24) of said friction disk extends substantially perpendicularly to the plane of the knife blade. A driver member acts on the friction disk which advances the slide together with the knife blade into the cutting position thereof against the force of the retraction means.
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Citations
11 Claims
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1. A utility knife comprising a handle housing having an upper and lower edge (32);
- a slide mounted within said housing for longitudinal displacement;
a knife blade having a cutting edge and connected to said slide;
retraction means (18) located within said housing for retracting said slide and said knife blade (16) from a cutting position into a protected position in the handle housing;
a friction disk (22) turnably mounted within said handle housing (10) and extending out of said handle housing (10) on said cutting-edge side of said knife blade (16);
the axis of rotation (24) of said friction disk extending substantially perpendicularly to the plane of said blade; and
a driver member for advancing said slide (12) together with said knife blade (16) into the cutting position thereof against the force of the retraction means (18). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- a slide mounted within said housing for longitudinal displacement;
Specification