Motor chain saw with dynamic safety braking device

Details Motor chain saw with dynamic safety braking device Motor chain saw with dynamic safety braking device

1980-05-29

1982-04-13

Peters, Jimmy C.

Cutlery

Cutting tools

Saw

30383, B27B 1702

Patent

active

043240453

ABSTRACT:
A portable motor chain saw with a safety braking device to protect against kick-back, recoil or centrifugal movements of the saw. The saw includes a handle supported against the motor housing by damping elements, and also includes a locking device which on the one hand is connected with the handle, and on the other hand engages against a hand guard in such a way that it is released under the influence of relative movement, of the motor housing with respect to the handle, caused by a kick-back or centrifugal movement, consequently releasing the hand guard. The locking device has an abutment surface extending transverse to the direction of centrifugal movement, and this abutment surface cooperates with a projection directed against it.

REFERENCES:
patent: 3991469 (1976-11-01), Frederickson
patent: 4091896 (1978-05-01), Wieland
patent: 4121339 (1978-10-01), Nikolich

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