192 clutches and power-stop control – Clutches – Fluent material
Patent
1990-11-29
1992-07-28
Bonck, Rodney H.
192 clutches and power-stop control
Clutches
Fluent material
F16D 3500
Patent
active
051334380
ABSTRACT:
A viscous coupling has an operating chamber in which: first and second (resistance) plates for transmitting torque therebetween are so arranged to be rotatable relative to each other, while spaced alternately with each other; and a viscous fluid is filled in the operating chamber, so that the resistance of the viscous fluid to rotation of the plates contributes to transmitting of torque between the first and the second plates. The coupling further comprises a plurality of spacer rings each of which is interposed between adjacent ones of the first or the second plates, each of which spacer rings is provided with an annular groove in which a peripheral portion of each of the second or the first plates is fitted, so that the first plates are surely spaced apart from the second plates through the spacer rings, whereby the hump torque is prevented from being produced in the coupling even when a difference in rotational speed between the first plates and second plate increases.
REFERENCES:
patent: 3373633 (1968-03-01), Desmond et al.
patent: 3390748 (1968-07-01), Hein et al.
patent: 4058027 (1977-11-01), Webb
patent: 4444298 (1984-04-01), Stangroom
patent: 4925409 (1990-05-01), Johnson
patent: 4938322 (1990-07-01), Sugasawara et al.
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