Fluid friction coupling

Details Fluid friction coupling Fluid friction coupling

1993-06-28

1995-04-11

Lorence, Richard M.

192 clutches and power-stop control

Clutches

Fluent material

192 82T, F16D 3500

Patent

active

054049776

ABSTRACT:
To increase the idling rotational speed of a fluid friction coupling, the static pressure in the reservoir space is increased by a differential pressure valve which opens toward the reservoir chamber at a defined differential pressure between the working chamber and the reservoir chamber. The fluid friction coupling includes a driving element; a driven-end coupling housing including a reservoir chamber and a working chamber; a partition for separating the reservoir chamber from the working chamber; a return passage arranged in the coupling housing between the working chamber and the reservoir chamber; and a differential pressure valve arranged within or in the region of the return passage.

REFERENCES:
patent: 2792095 (1957-05-01), Sherman
patent: 3259220 (1966-07-01), Roper
patent: 4188785 (1980-02-01), Ando et al.
patent: 4544053 (1985-10-01), Yamaguchi et al.
patent: 4570771 (1986-02-01), Yamaguchi et al.
patent: 4574929 (1986-03-01), Hayashi et al.
patent: 4924987 (1990-05-01), Kennedy
patent: 4995494 (1991-02-01), Kennedy et al.

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