Folding blade knife with spring assisted pivoting feature

Details Folding blade knife with spring assisted pivoting feature Folding blade knife with spring assisted pivoting feature

2005-11-01

2005-11-01

Watts, Douglas D (Department: 3724)

Cutlery

Sheathed

Pivoted blade

C030S160000

Reexamination Certificate

active

06959494

ABSTRACT:
A folding knife having a blade and integral tang pivotally mounted to a handle with a cantilever spring fixedly attached at one end to the handle and extending to a free, terminal end having a lobed portion. A camming member fixed to the tang has a camming surface spaced from the pivot axis extending through the tang. The lobed portion of the spring contacts the camming surface when the blade is in the fully closed position and remains in contact throughout a first portion of the blade movement toward the open position. The spring is out of contact with the camming surface during a second portion of blade movement, from the end of the first portion to the fully open position. Momentum developed by spring force applied to the camming member during the first portion of blade movement is sufficient to move the blade through the second portion of its movement to the fully open position. Cooperative stop portions on the tang and handle define the limits of blade movement to fully open and closed positions, and resiliently lock the blade in the fully open position.

REFERENCES:
patent: 23975 (1859-05-01), Belcher
patent: 226910 (1880-04-01), Friebertschauser
patent: 338251 (1886-05-01), Crandall et al.
patent: 530792 (1894-12-01), Nordlow
patent: 551052 (1895-12-01), Shonnard et al.
patent: 557760 (1896-04-01), Brauer
patent: 600442 (1898-03-01), Nell
patent: 749230 (1904-01-01), Severence
patent: 969909 (1910-09-01), Schrade et al.
patent: 1454665 (1923-05-01), Bobek
patent: 1584165 (1926-05-01), Brown
patent: 1701027 (1929-02-01), Brown
patent: 1743022 (1930-01-01), Carman
patent: 1810031 (1931-06-01), Schrade
patent: 1864011 (1932-06-01), Brown
patent: 4347665 (1982-09-01), Glesser
patent: 4404748 (1983-09-01), Wiethoff
patent: 4451982 (1984-06-01), Collins
patent: 4502221 (1985-03-01), Pittman
patent: 4719700 (1988-01-01), Taylor, Jr.
patent: 4805303 (1989-02-01), Gibbs
patent: 4811486 (1989-03-01), Cunningham
patent: 4837932 (1989-06-01), Elsener
patent: 4896424 (1990-01-01), Walker
patent: 4974323 (1990-12-01), Cassady
patent: 4979301 (1990-12-01), Walker
patent: 5044079 (1991-09-01), Gibbs
patent: 5060379 (1991-10-01), Neely
patent: 5095624 (1992-03-01), Ennis
patent: 5111581 (1992-05-01), Collins
patent: 5293690 (1994-03-01), Cassady
patent: 5331741 (1994-07-01), Taylor, Jr.
patent: 5400509 (1995-03-01), Collins
patent: 5437101 (1995-08-01), Collins
patent: D365266 (1995-12-01), Hasegawa
patent: 5502895 (1996-04-01), Lemaire
patent: 5515610 (1996-05-01), Levin et al.
patent: 5537750 (1996-07-01), Seber et al.
patent: 5689885 (1997-11-01), Walston
patent: 5692304 (1997-12-01), Campbell
patent: 5737841 (1998-04-01), McHenry et al.
patent: 5755035 (1998-05-01), Weatherly
patent: 5802722 (1998-09-01), Maxey et al.
patent: 5815927 (1998-10-01), Collins
patent: 5819414 (1998-10-01), Marifone
patent: 5822866 (1998-10-01), Pardue
patent: 5826340 (1998-10-01), Hull
patent: 5887347 (1999-03-01), Gibbs
patent: 5915792 (1999-06-01), Sakurai
patent: 5964035 (1999-10-01), Poehlmann
patent: 5964036 (1999-10-01), Centofante
patent: 6079106 (2000-06-01), Vallotton
patent: 6145202 (2000-11-01), Onion
patent: 6154965 (2000-12-01), Sakai
patent: 6308420 (2001-10-01), Moser
patent: 6338431 (2002-01-01), Onion
patent: 6363615 (2002-04-01), Moser
patent: 6370778 (2002-04-01), Conable
patent: 6397476 (2002-06-01), Onion
patent: 6397477 (2002-06-01), Collins
patent: 6427334 (2002-08-01), Onion
patent: 6732436 (2004-05-01), Moizis
patent: 2003/0140500 (2003-07-01), Cheng
patent: 1104386 (1960-01-01), None
patent: 1069862 (1954-02-01), None
patent: 1248117 (1960-10-01), None
patent: 52-60500 (1977-05-01), None

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