Centerless saw device

Details Centerless saw device Centerless saw device

2009-01-07

2011-10-04

Nguyen, Phong H (Department: 3724)

Cutlery

Cutting tools

Saw

C030S276000, C030S123300, C030S347000, C030S390000

Reexamination Certificate

active

08028425

ABSTRACT:
The present invention generally pertains to a saw device. More particularly, the present invention relates to a handheld centerless saw. The saw comprises a frame and a pair of driving rollers mounted to the frame for rotation. The saw also comprises an annular blade mounted between the drive rollers and functionally engaged thereby, where the blade defines frontward and backward hemispheres. At least two guide wheels are mounted to the frame, or to a cover mounted to the frame, the guide wheels being positioned in the backward hemisphere of the blade. The guide wheels are operatively engaging the inner circular edge of the blade. A drive assembly mounted to the frame is operable for urging the countersense rotation of drive rollers, thereby causing rotation of the blade.

REFERENCES:
patent: 773118 (1904-10-01), Carter
patent: 1395101 (1921-10-01), Fite
patent: 3221783 (1965-12-01), Kaltenmark et al.
patent: 3930310 (1976-01-01), Santilli
patent: 4800650 (1989-01-01), Johansson
patent: 5529532 (1996-06-01), Desrosiers
patent: 6336273 (2002-01-01), Nilsson et al.
patent: 2006/0064881 (2006-03-01), Blatz

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