Chain saw clutch with engaging and releasing centrifugal weights

Details Chain saw clutch with engaging and releasing centrifugal weights Chain saw clutch with engaging and releasing centrifugal weights

1973-09-04

1976-07-20

Wyche, Benjamin W.

192 clutches and power-stop control

Clutches

Operators

30381, 192105CE, 192104B, 192 26, 192 17R, F16D 4314, B27B 1700

Patent

active

039701786

ABSTRACT:
Disclosed herein is a chain saw comprising a frame having a handle, a clutch driven by a drive shaft driven by an engine mounted on the frame and including a clutch shoe movable in response to clutch shoe rotation relative to a position of driving engagement with a rotatable clutch drum and selectively operable means for preventing engagement of the clutch shoe with the clutch drum, a bar mounted on the frame for movement between a first position spaced from the handle and a second position adjacent to the handle, means operably connected to the bar for operating the means for preventing engagement of the clutch shoe with the clutch drum to prevent clutch shoe engagement when the bar is in the first position and to permit clutch shoe engagement when the bar is in the second position, and means operable for braking rotation of the clutch drum when the bar is in the first position.

REFERENCES:
patent: 740719 (1903-10-01), Walker
patent: 771771 (1904-10-01), Dysterud
patent: 1316432 (1919-09-01), Edens
patent: 1884873 (1932-10-01), Roberts
patent: 2002478 (1935-05-01), Roberts
patent: 2380595 (1945-07-01), Hertrich
patent: 2488599 (1949-11-01), Merz
patent: 2809535 (1957-10-01), Hein et al.
patent: 3324984 (1967-06-01), Brame
patent: 3785465 (1972-02-01), Johansson
patent: 3804222 (1974-04-01), Reams

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