Cutlery – Cutting tools – Saw
Patent
1995-09-29
1996-10-01
Payer, Hwei-Siu
Cutlery
Cutting tools
Saw
30382, B27B 1702
Patent
active
055601111
ABSTRACT:
First and second elongated members are mounted on the opposite faces of a chain guide of a conventional chain saw. Each member has an elongated center portion with a rib extending therealong. A plurality of spaced apart teeth project from the center portion substantially parallel to the chain guide over and beyond the chain. The rib at least partially abuts the chain guide face to space the teeth laterally away from the chain. Each tooth preferably has an upstream edge angled laterally outwardly to help retain the chain on a path around the periphery of the chain guide. The angled surface may be formed by beveling or by bending an edge of the tooth. The teeth are arranged in opposite pairs. A spacer may be provided extending perpendicularly between tip portions of the teeth to inhibit bending of the teeth toward the chain. The spacer may be a pin or may be formed by bending the tip of the teeth toward each other to form a blunt outer end.
REFERENCES:
patent: 2034058 (1936-03-01), Sacrey
patent: 2642901 (1953-06-01), Hayden
patent: 2698034 (1954-12-01), Jakku
patent: 2797717 (1957-07-01), Budd
patent: 3808684 (1974-05-01), Ludwig
patent: 3815229 (1974-06-01), Granberg
patent: 4142292 (1979-03-01), Ulrich
patent: 5123168 (1992-06-01), Lyons
Pauly Joan H.
Payer Hwei-Siu
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