Multi-mode clutch for change-speed transmissions

Details Multi-mode clutch for change-speed transmissions Multi-mode clutch for change-speed transmissions

1990-03-30

1991-07-16

Herrmann, Allan D.

192 clutches and power-stop control

Clutches

Operators

192 52, 192 54, F16D 1900

Patent

active

050317466

ABSTRACT:
An automatic change speed transmission with a multi-mode friction device which is torque sensitive to operatively hold transmission gearing for reaction in a drive direction and automatically self releases in the manner of a one way or free-wheeler clutch on torque reversals to provide inherent smooth shifting between the ratios. This clutch can also be fully locked to provide engine braking in coast operation. In the released mode, the multi-mode clutch is fully released in both drive and coast direction. With this multi-mode clutch the transmission length can be foreshortened significantly and existing transmissions can be readily and economically converted from conventional friction element shifts to free-wheeler type shifts. This multi-mode clutch can also be used to selectively couple and release two rotatable members.

REFERENCES:
patent: 2702618 (1955-02-01), Baker et al.
patent: 2720866 (1955-10-01), Maki et al.
patent: 2766864 (1956-10-01), Schilling et al.
patent: 3265175 (1966-08-01), Croswhite
patent: 3511349 (1978-05-01), Herscovici
patent: 3719259 (1973-03-01), Burcz et al.
patent: 4083442 (1987-04-01), Ushijima
patent: 4089396 (1978-05-01), Quick
patent: 4308940 (1982-01-01), Cadee
patent: 4325471 (1982-04-01), Schuster
patent: 4442929 (1984-04-01), Uchida
patent: 4458797 (1984-07-01), Hawkins
patent: 4713984 (1987-12-01), Ohkubo

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