Rotary knife blade for low friction rotary knife

Details Rotary knife blade for low friction rotary knife Rotary knife blade for low friction rotary knife

2006-02-21

2011-12-13

Choi, Stephen (Department: 3724)

Cutlery

Cutting tools

With blade moving means

C452S133000

Reexamination Certificate

active

08074363

ABSTRACT:
A power operated knife comprises a blade supporting structure supporting an annular blade for rotation about a central axis. The blade and blade supporting structure are engagable along bearing contact locations that are spaced apart in a direction parallel to the axis so that the blade is stabilized both radially and axially as the knife operates. The blade supporting structure comprises a split blade housing member that is radially expandible and contractible to receive the blade. The split blade housing member and blade engage along relatively short lines of bearing contact that serve to minimize friction and blade heating when the knife operates. The bearing locations are spaced apart both circumferentially around the blade perimeter and in the direction of the axis so that the blade position is stabilized during operation of the knife.

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Oct. 3, 2011 Decision and Opinion of the United States Court of Appeals for the Federal Circuit (Appeal No. 2011-1038,-1046) regarding the case styledBettcher Industries, Inc. v.Bunzl USA, Inc. and Bunzl Processor Distribution, LLCCase No. 3:08 CV 2423, U.S. District Court for the Northern District of Ohio, Judge Zouhary. The Decision and Opinion relates to U.S. Pat. No. 7,000,325, which issued from U.S. Appl. No. 10/909,168, the parent of the present application (47 pages).
Jul. 28, 2011 Decision on Appeal of the Board of Patent Appeals and Interferences (Appeal No. 20011-00791, Control No. 95/001,130) regarding the inter partes reexamination of U.S. Pat. No. 7,000,325, which issued from U.S. Appl. No. 10/909,168, the parent of the present application (12 pages).

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