Cutlery – Combined cutlery or combined with ancillary feature – With material-holder or disposal
Reexamination Certificate
2011-05-10
2011-05-10
Payer, Hwei-Siu C (Department: 3724)
Cutlery
Combined cutlery or combined with ancillary feature
With material-holder or disposal
C030S228000
Reexamination Certificate
active
07937838
ABSTRACT:
A hydraulic rescue tool (10) with a quick-change head (26) that incorporates a cylinder (20) having a piston rod (22) and a forward end structure (24). The forward end structure (24) has a separable head and a cylinder attaching bifurcated yoke (28). A pair of yoke quick release pins (48) jointly engage the head (26) and the bifurcated yoke (28) thus, creating an attachment therebetween. A pair of cutting blades (50) are connected to the head (26), and links (54) connect to the piston rod on a first end and to the cutting blades (50) on a second end, thereby forcing the cutting blades from an open position to a closed position by movement of the piston rod (22). A pair of link quick release pins (60) engage the links (54), creating an attachment therebetween, permitting the links to be released by manually disengaging the quick release pins, thereby allowing the head, including the cutting blades, to be rapidly removed or repaired.
REFERENCES:
patent: 2447401 (1948-08-01), Ferguson et al.
patent: 3570835 (1971-03-01), McPherson
patent: 3819153 (1974-06-01), Hurst et al.
patent: 4234990 (1980-11-01), Colburn
patent: 4333330 (1982-06-01), Porter
patent: 4392263 (1983-07-01), Amoroso
patent: 4506445 (1985-03-01), Esten
patent: 4531289 (1985-07-01), Brick
patent: 4734983 (1988-04-01), Brick
patent: 4842249 (1989-06-01), Weigand
patent: 4886635 (1989-12-01), Forster et al.
patent: 4896862 (1990-01-01), Ganley
patent: 5243761 (1993-09-01), Sullivan et al.
patent: 5301533 (1994-04-01), Jackson
patent: 5425260 (1995-06-01), Gehron
patent: 5544862 (1996-08-01), Hickerson
patent: 5622353 (1997-04-01), Painter et al.
patent: 5956992 (1999-09-01), Patton
patent: 6244568 (2001-06-01), Patton
patent: 7107812 (2006-09-01), Patton et al.
patent: 7568372 (2009-08-01), Patton et al.
patent: 2005/0063177 (2005-03-01), Correa
Hagbloom Edward H.
Patton Tommy L.
Cota Albert O.
Payer Hwei-Siu C
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