Orbital rotary blade sharpener

Details Orbital rotary blade sharpener Orbital rotary blade sharpener

2007-07-03

2007-07-03

Hail, III, Joseph J. (Department: 3723)

Abrading

Frame or mount

Portable abrader

C451S045000, C451S371000, C451S357000, C451S358000, C451S359000, C451S549000, C451S282000, C451S367000

Reexamination Certificate

active

11437398

ABSTRACT:
An orbital rotary blade sharpener for sharpening rotary cutter blades and other rotary blades includes a bottom blade holding portion having a center and a perimeter edge, a top blade holding portion rotatably connectable to said bottom blade holding portion, having a perimeter and a center, a central shaft portion extending from said bottom blade holding portion through said top blade holding portion over which a rotary blade can be fitted, a radial shaft portion extending through said top blade holding portion positioned between the perimeter and the center of the top blade holding portion, and grinding portion connected to said radial shaft portion, and within said top blade holding portion, positioned to be orbitally revolvable around said bottom blade holding portion center and contactable with a blade held between said top and bottom blade holding portions.

REFERENCES:
patent: 889830 (1908-06-01), Van Berkel
patent: 1051646 (1913-01-01), Stukart
patent: 1165342 (1915-12-01), Peterson
patent: 1310700 (1919-07-01), Hood et al.
patent: 1957776 (1934-05-01), Gury
patent: 1977418 (1934-10-01), Winkler
patent: 2694887 (1954-11-01), Green et al.
patent: 2721430 (1955-10-01), Green et al.
patent: 3349485 (1967-10-01), Bettcher
patent: 4306385 (1981-12-01), Burton
patent: 4373302 (1983-02-01), Darby
patent: 5499943 (1996-03-01), Terris
patent: 5660582 (1997-08-01), Terris

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