Viscous fluid coupling device

Details Viscous fluid coupling device Viscous fluid coupling device

1983-10-14

1986-12-09

Green, Randall L.

192 clutches and power-stop control

Clutches

Fluent material

192 82T, F16D 3500

Patent

active

046275240

ABSTRACT:
A viscous fluid coupling device for controlling the transmission of an outpt torque in response to the ambient temperature of the device. The coupling device includes a valve plate for successively effecting first, second and third operational modes to maintain the output torque transmission respectively at low, medium and high levels. The valve plate is provided with a slot which is arranged to effect a fourth operational mode between the second and third operational modes thereby to reliably effect the second operational mode in response to a drop in the ambient temperature of the device.

REFERENCES:
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patent: 4381051 (1983-04-01), Kikuchi
patent: 4446952 (1984-05-01), Masai
patent: 4469209 (1984-09-01), Hayashi et al.
patent: 4502580 (1985-03-01), Clancey
patent: 4544053 (1985-10-01), Yamaguchi et al.

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