Safety brake mechanism for power chain saws

Details Safety brake mechanism for power chain saws Safety brake mechanism for power chain saws

1981-05-11

1982-05-11

Peters, Jimmy C.

Cutlery

Cutting tools

Saw

30383, 188166, B27B 1700

Patent

active

043286178

ABSTRACT:
A chain saw safety brake mechanism includes an actuating drum rotatably disposed around the periphery of a clutch drum and a brake band wound around the clutch drum at least one convolution and hooked at one of its ends its other actuating drum and attached to the other end to a chain saw body. A spring is provided for turning the actuating drum from its ready position to a brake actuating position in which the brake band is tightened around the clutch drum to arrest its rotation. A reset lever is provided on the actuating drum to turn it to the ready position thereby producing a spring force in the spring.

REFERENCES:
patent: 3839795 (1974-10-01), Dooley
patent: 3923126 (1976-01-01), Bidanset
patent: 3934345 (1976-01-01), Hirschkoff
patent: 3964333 (1976-06-01), Hirschkoff
patent: 3991469 (1976-11-01), Frederickson
patent: 4059895 (1977-11-01), Hirschkoff
patent: 4197640 (1980-04-01), Murray
patent: 4246701 (1981-01-01), Johansson

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