Clutch plate with blocking wall for a viscous fluid clutch

Details Clutch plate with blocking wall for a viscous fluid clutch Clutch plate with blocking wall for a viscous fluid clutch

1993-09-07

1995-01-03

Pitts, Andrea L.

192 clutches and power-stop control

Clutches

Fluent material

192 82T, F16D 3500

Patent

active

053777980

ABSTRACT:
A fan clutch includes a housing and a cover cooperating to contain a viscous fluid. A pump plate divides an interior of the fan clutch into a working chamber and a reservoir. A driven clutch plate, disposed in the working chamber, includes hub and disk portions. A wiper is mounted on the pump plate adjacent a discharge orifice so that a first clearance is provided between the wiper and a front surface of the disk portion. An annular blocking wall is formed on the front surface of the disk portion radially inbound of the wiper. The height of the blocking wall is such that a second clearance formed between the blocking wall and the pump plate is less than or substantially equal to the first clearance, thereby forming a dynamic seal.

REFERENCES:
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patent: 4924987 (1990-05-01), Kennedy
patent: 4938328 (1990-07-01), Kennedy
patent: 4938329 (1990-07-01), Kennedy
patent: 5070980 (1991-12-01), Nakagawa

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