Rotary knife with improved drive transmission

Cutlery – Cutting tools – With blade moving means

Reexamination Certificate

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C030S293000, C452S134000

Reexamination Certificate

active

11144885

ABSTRACT:
A rotary knife with an improved drive transmission. The knife includes a tubular handle assembly, an annular blade, a blade housing, a pneumatic motor, and a drive transmission assembly. The transmission includes a drive or pinion gear, a drive shaft, and a connector assembly that inhibits axial movement of the pinion gear into the blade housing by the force of air pressure.

REFERENCES:
patent: 4170063 (1979-10-01), Bettcher
patent: 4324043 (1982-04-01), McCullough
patent: 4439924 (1984-04-01), Bettcher
patent: 4494311 (1985-01-01), McCullough
patent: 4509261 (1985-04-01), Bettcher
patent: 4516323 (1985-05-01), Bettcher et al.
patent: 4637140 (1987-01-01), Bettcher
patent: 4854046 (1989-08-01), Decker et al.
patent: 4894915 (1990-01-01), Decker et al.
patent: 5025559 (1991-06-01), McCullough
patent: 5230154 (1993-07-01), Decker et al.
patent: 6694649 (2004-02-01), Whited et al.
patent: 6751872 (2004-06-01), Whited et al.
patent: 2003/0084576 (2003-05-01), Whited et al.

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