192 clutches and power-stop control – Clutches – Fluent material
Patent
1986-05-27
1987-03-31
Friedman, Carl D.
192 clutches and power-stop control
Clutches
Fluent material
192 82T, F16D 3100
Patent
active
046536248
ABSTRACT:
A fluid shear coupling apparatus includes a driving member comprising a rotor mounted to a shaft and defining several annular ridges and grooves. A driven member including a bearing housing is mounted to the shaft. A cover secured at the perimeter to the bearing housing has a disc-shaped portion defining several annular ridges and grooves positioned complementary with the ridges and grooves of the rotor. A shear fluid therebetween provides variable coupling according to the proportion of fluid in the reservoir vis a vis the working chamber defined by the complementary grooves and ridges. A temperature responsive valve cooperates with a modulation ramp encasing the valve end to provide a fluid control orifice which varies in size and radial location in response to temperature, thereby providing temperature modulation of the amount of shear fluid in the working chamber, and consequently, the degree of coupling.
REFERENCES:
patent: 3339689 (1967-09-01), Sutaraute
patent: 4502580 (1985-03-01), Clancey
patent: 4544053 (1985-10-01), Yamaguchi et al.
patent: 4555004 (1985-11-01), Nakamura et al.
patent: 4591037 (1986-05-01), Bopp
Friedman Carl D.
Household Manufacturing Inc.
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