Utility knife

Details Utility knife Utility knife

2006-06-07

2008-11-11

Payer, Hwei-Siu C (Department: 3724)

Cutlery

Combined cutlery or combined with ancillary feature

With material-holder or disposal

C030S162000

Reexamination Certificate

active

07448136

ABSTRACT:
A utility knife includes a housing having a compartment for receiving one or more spare knife blades, a blade carrier slidably received in the housing for supporting and moving a knife blade into and out of the housing, and a pushing device for selectively pushing and feeding one of the spare knife blades into the blade carrier without opening or detaching the housing. A pusher is slidably received in the housing and has an edge for engaging with and for moving the spare knife blade to the blade carrier, and a spring element may move the pusher relative to the housing and to offset the pusher from the spare knife blade. A hand grip may be used to move the pusher relative to the housing.

REFERENCES:
patent: 4277888 (1981-07-01), Szabo
patent: 4761882 (1988-08-01), Silverstein
patent: 5435062 (1995-07-01), Huang
patent: 6192589 (2001-02-01), Martone et al.
patent: 6249975 (2001-06-01), Lin
patent: 6446340 (2002-09-01), Ping
patent: 6553674 (2003-04-01), Budrow
patent: 6742261 (2004-06-01), Ho
patent: 6829827 (2004-12-01), Tseng
patent: 6886257 (2005-05-01), Chih
patent: 2003/0154605 (2003-08-01), Chao
patent: 2005/0193567 (2005-09-01), Ho
patent: 2005/0283983 (2005-12-01), Huang
patent: 2007/0220758 (2007-09-01), Ho

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