Wet friction member, and wet frictional engagement apparatus for

Details Wet friction member, and wet frictional engagement apparatus for Wet friction member, and wet frictional engagement apparatus for

1989-06-09

1990-07-17

Bonck, Rodney H.

192 clutches and power-stop control

Elements

Engaging surfaces

192107M, 192 7014, F16D 136, F16D 1374

Patent

active

049415590

ABSTRACT:
A wet frictional engagement apparatus comprising an input side member, an output side member, a wet friction member attached to one of the input side member and the output side member, an opposite member facing the friction member and attached to the other of the input side member and the output side member, and a device for applying pressure to engage the friction member and the opposite member. The wet friction member comprises a substrate, a plurality of first friction submembers mounted spaced apart on the substrate, and a plurality of second friction submembers mounted on the substrate each adjacent one of the first friction submembers forming a pair of submembers. Each pair of submembers is spaced from each adjacent pair by an oil groove. Each first friction member is relatively less oil-permeable and each second friction member is relatively more oil-permeable. In this manner, wet friction member has a different effective coefficient of friction depending on which direction relative motion between the friction member and the opposite member occurs when pressure is applied therebetween.

REFERENCES:
patent: 2516544 (1950-07-01), Breeze
patent: 4741424 (1988-05-01), Kitano et al.

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