Control means for rotary power transmission

Details Control means for rotary power transmission Control means for rotary power transmission

1981-09-16

1984-04-17

Herrmann, Allan D.

Machine element or mechanism

Gearing

Interchangeably locked

74337, 74868, 74869, F16H 552, F16H 542, B60K 4116

Patent

active

044427271

ABSTRACT:
A rotary power transmission having a series of up to five gear trains and two clutches alternately engagable to provide drive paths through the gear trains in series sequence has control means including a fluid pressure source and three solenoid-operated valves to direct source fluid to two spool valves which provide discrete fluid pressure signals for engagement of gear trains two at a time in progressively over-lapping pairs, the gear trains being for eventual drive according to clutch engagement.

REFERENCES:
patent: 3691861 (1972-09-01), Sturmer
patent: 3695121 (1972-10-01), Corrigan et al.
patent: 3797330 (1974-03-01), Ushijima
patent: 3823621 (1974-07-01), Kubo et al.
patent: 3903759 (1975-09-01), Hashimoto
patent: 4335428 (1982-06-01), Miki et al.
patent: 4346627 (1982-07-01), Kawamoto et al.
patent: 4361060 (1982-11-01), Smyth

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