Torque converter lock-up device

Details Torque converter lock-up device Torque converter lock-up device

1991-10-25

1993-05-18

Bonck, Rodney H.

192 clutches and power-stop control

Vortex-flow drive and clutch

Including drive-lockup clutch

192 7028, 192101, 192109R, F16H 4502

Patent

active

052112705

ABSTRACT:
A lock-up device disposed between a front cover and a turbine coaxial with the front cover of a torque converter includes a piston elastically connected to the turbine, a plurality of friction discs provided between the piston and the front cover, and an elastic member for spacing the friction discs apart from one another when the device is disengaged. When this lock-up device is engaged, the piston presses the friction discs against the front cover, whereby torque is transmitted to the turbine through the friction discs and the piston. When the lock-up device is disengaged, the piston is moved away from the front cover, and the elastic member spaces the friction discs apart from one another so as not to transmit torque. The performance of the lock-up device is thus improved in order to decrease drag torque.

REFERENCES:
patent: 2995956 (1961-08-01), Moore
patent: 3240308 (1966-03-01), Frost
patent: 3613848 (1971-10-01), Reiff
patent: 4027757 (1977-06-01), Radke et al.
patent: 4056177 (1977-11-01), Ahlen et al.
patent: 4177885 (1979-12-01), Ross
patent: 4240532 (1980-12-01), Blomquist
patent: 4785924 (1988-11-01), Jackel
patent: 4821855 (1989-04-01), Jackel

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