Control system for independent control of fluid actuated devices

Details Control system for independent control of fluid actuated devices Control system for independent control of fluid actuated devices

1987-11-05

1989-04-04

Bonck, Rodney H.

192 clutches and power-stop control

Transmission control and clutch control

Common control

192 363, 192 8713, F16D 2511

Patent

active

048177709

ABSTRACT:
Control systems are required to selectively control fluid actuated devices, such as clutches, in a transmission. In order to reduce shock loads on the internal elements of the transmission, it is necessary to ensure that only one clutch can be engaged at one time and that no major speed changes or change in direction is allowed. The present invention provides an interlocking arrangement that operates to control a source of pressurized fluid to a plurality of valve mechanism and a plurality of signal control devices. The operation of one of the plurality of valve mechanisms interrupts the flow of fluid to other ones of the plurality of valve mechanisms and to ones of the signal control devices. With this subject arrangement, the shock loads to the transmission are substantially reduced.

REFERENCES:
patent: 2929478 (1960-03-01), Tuck et al.
patent: 3946842 (1976-03-01), Siebers et al.
patent: 4046160 (1977-09-01), Horsch
patent: 4492251 (1985-01-01), Blake
patent: 4729408 (1988-03-01), Coutant

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