Sheave for a speed variator and a method of replacing a belt the

Details Sheave for a speed variator and a method of replacing a belt the Sheave for a speed variator and a method of replacing a belt the

1977-12-22

1979-12-18

Scott, Samuel

Machine element or mechanism

Gearing

Toothed gear and recirculated unconnected elements

403329, 29256, 267161, F16H 5552, F16H 5556, F16F 134, B23P 1904

Patent

active

041788087

ABSTRACT:
A sheave for a speed variator comprising a fixed and a movable side mounted for rotation with a common shaft. A diaphragm spring urges the movably slide towards the fixed side to clamp a V-belt therebetween. The fixed side may be removed and turned around and then tightened with its own threaded fastener on the shaft to urge the movable side against the force of the diaphragm spring to a retracted position. A retaining member, e.g. a screwdriver, cooperates with the movable side to temporarily hold the same in its retracted position while the fixed side is removed again and turned around and secured by the threaded member in its normal position. The V-belt is then repositioned between the side and the retaining member released. Alternatively, the retaining member may be released automatically, e.g. centrifugally, when the variator is set into motion again.

REFERENCES:
patent: 2073146 (1937-03-01), Gardiner
patent: 2172641 (1939-09-01), Piron
patent: 2191531 (1940-02-01), Judelshon
patent: 3078556 (1963-02-01), Carroll
patent: 3115699 (1963-12-01), Nakahira
patent: 3216098 (1965-11-01), Ratz
patent: 3368266 (1968-02-01), Shultz
patent: 4020711 (1977-05-01), Woollard

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