Utility knife

Details Utility knife Utility knife

2006-10-18

2009-06-02

Prone, Jason Daniel (Department: 3724)

Cutlery

Sheathed

Sliding blade

Reexamination Certificate

active

07540092

ABSTRACT:
A utility knife has an elongated housing having a pair of opposite side faces and a rear edge and formed with a longitudinal guide passage open at an end of the housing, respective side cutouts on the side faces, and a back cutout on the rear edge. A blade holder longitudinally shiftable in the housing carries a blade having a cutting edge directed forward away from the rear edge. The holder is longitudinally shiftable between a use position with the blade projecting from the housing front end and a retracted position with the blade inside the housing. Respective side and rear actuating formations are coupled to the blade holder and exposed at the side and rear cutouts so that the blade can be actuated by a user's fingers via any of the actuating formations. A spring in the housing urges the holder and blade into the retracted position.

REFERENCES:
patent: 1507043 (1924-09-01), Blow
patent: 4835865 (1989-06-01), Knoop
patent: 4862590 (1989-09-01), Winyard et al.
patent: 5337481 (1994-08-01), Mears
patent: 6263577 (2001-07-01), Wonderley
patent: 6415514 (2002-07-01), Chun
patent: 7131204 (2006-11-01), Brown
patent: D557079 (2007-12-01), Schmidt
patent: 2005/0193567 (2005-09-01), Ho
patent: 2005/0241111 (2005-11-01), Prokop
patent: 2008/0083119 (2008-04-01), Schmidt

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