Full position safety brake for portable chain saw

Details Full position safety brake for portable chain saw Full position safety brake for portable chain saw

1976-04-19

1977-11-29

Peters, Jimmy C.

Cutlery

Cutting tools

Saw

188166, B27B 1700, B60T 1304

Patent

active

040598950

ABSTRACT:
A hand portable chain saw with a movable safety bar for actuating a chain brake has a bracket and a lineally-acting spring which together provide a detent for holding the safety bar in the nonbraking operating position, but yet accelerate the braking movement of the safety bar upon disengagement from the detent.
The carrying handle for a portable chain saw encircles the top and both sides of the saw housing to enhance both operator safety and convenience. The brake-actuating safety bar on the saw has a similar wrap-around contour to ensure engagement by the operator in the event of untoward movement of the saw for essentially any sawing position.

REFERENCES:
patent: 3380493 (1968-04-01), Giroux
patent: 3776331 (1973-12-01), Gustafsson
patent: 3937306 (1976-02-01), Naslund
patent: 3970178 (1976-07-01), Densow

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