Chain saw coupling mechanism

Details Chain saw coupling mechanism Chain saw coupling mechanism

1976-07-30

1977-07-05

Smith, Al Lawrence

Cutlery

Cutting tools

Saw

192 17R, B27B 1710, F16D 1500

Patent

active

040330389

ABSTRACT:
A clutch operable manually to couple and uncouple a driven member from a drive shaft and to stop movement of the driven member upon uncoupling of the same. A driving clutch plate and a reaction member are fixed on the drive shaft and axially spaced apart thereon. A driven clutch plate and a cooperating actuating and output member, mounted on the drive shaft between the driving clutch plate and reaction member, provide an axially expansible and contractible clutch assembly, the actuating and output member having driving engagement with the driven member. Actuator means, carried by the driven clutch plate and the actuating and output member, limits rotary movement between the driven clutch plate actuating and output member, and causes the clutch assembly to vary between expanded and contracted conditions. A stopping device is arranged to prevent rotation of the driven clutch plate.

REFERENCES:
patent: 2299621 (1942-10-01), Giffen
patent: 2308679 (1943-01-01), Eason
patent: 2308680 (1943-01-01), Eason
patent: 3785465 (1974-01-01), Johansson
patent: 3857180 (1974-12-01), Dooley
patent: 3958680 (1976-05-01), Armbruster
patent: 3991864 (1976-11-01), Muller

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