Drive coupling unit

Details Drive coupling unit Drive coupling unit

1988-11-17

1990-04-24

Reese, Randolph A.

192 clutches and power-stop control

Clutches

Fluent material

192 58R, 180248, 418180, B60K 1734, F01C 2100

Patent

active

049192485

ABSTRACT:
In a drive coupling unit suitable for use in an four-wheel drive unit for motor vehicles of the type wherein a torque is transmitted via a fluid pressure produced depending on a difference in rotational speed between two rotating shafts, each working fluid supply passage and a corresponding check valve disposed therein are arranged to interconnect one of two intake/discharge ports in each respective pump chamber with a tank in which a working fluid is retained. With this construction, an improved response characteristic of the check valves and a substantial reduction of the overall size of the drive coupling unit can be attained.

REFERENCES:
patent: 2969021 (1961-01-01), Menon
patent: 4256443 (1981-03-01), Kunze et al.
patent: 4468180 (1984-08-01), Shibuya
patent: 4566869 (1986-01-01), Pandeya et al.
patent: 4676336 (1987-06-01), Hiramatsu et al.

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