Fluid friction clutch

Details Fluid friction clutch Fluid friction clutch

1983-11-23

1985-12-03

Lazarus, Ronald H.

192 clutches and power-stop control

Clutches

Fluent material

123 4112, 192 82T, F16D 3500

Patent

active

045561389

ABSTRACT:
Disclosed is a fluid friction clutch assembly, comprising a drive shaft; a primary disk mounted for rotation on the drive shaft; a driven clutch housing surrounding the primary disk and being rotatably supported with respect to the drive shaft, the clutch housing containing a partition therein defining a work chamber and a reservoir separated by the partition, wherein the partition includes in its radially outer area at least one overflow opening closeable by means of a valve lever comprised of a magnetic material and a return flow orifice associated with pump means for pumping a viscous torque-transmitting medium from the work chamber to the reservoir; a pulley member mounted on the drive shaft for driving the shaft and means, associated with the pulley member, for selectively magnetically actuating the valve lever, in order to selectively open and close the overflow opening.

REFERENCES:
patent: 2452264 (1948-10-01), Russell
patent: 2807246 (1957-09-01), Jacobs
patent: 3179221 (1965-04-01), Weir
patent: 3250355 (1966-05-01), Weir
patent: 3323623 (1967-06-01), Roper
patent: 4007819 (1977-02-01), Maci
patent: 4056178 (1977-11-01), Detty
patent: 4228880 (1980-10-01), Gee
patent: 4246995 (1981-01-01), Gee
patent: 4270641 (1981-06-01), Nonnenmann et al.
patent: 4271945 (1981-06-01), Budinski
patent: 4346797 (1982-08-01), Bopp

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