Viscous fluid coupling device

Details Viscous fluid coupling device Viscous fluid coupling device

1975-08-25

1976-11-09

Herrmann, Allan D.

192 clutches and power-stop control

Clutches

Fluent material

F16D 3500

Patent

active

039905560

ABSTRACT:
A temperature-responsive viscous fluid coupling for use in automotive vehicles includes a rotatable input member driven by an engine and a rotatable output member driven by the input member via shearing force of viscous fluid. Notch means are successively provided on the whole outer periphery of the disk-shaped input member, and each of the notch means includes a line-shaped edge and a groove whereby substantially no fluid acts to transmit torque when the engine temperature is low, and the rotation of an engine cooling fan connected to the output member is kept low even when the coupling device is associated with the vehicle engine having a maximum rotation of more than 3,000 r.p.m. or 4,000 r.p.m.

REFERENCES:
patent: 3259221 (1966-07-01), Godfrey
patent: 3272293 (1966-09-01), Heater
patent: 3648811 (1972-03-01), La Flame
patent: 3741359 (1973-06-01), Leichliter

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