192 clutches and power-stop control – Vortex-flow drive and clutch – With brake
Patent
1977-09-21
1979-03-06
Wyche, Benjamin W.
192 clutches and power-stop control
Vortex-flow drive and clutch
With brake
91 47, 91461, 180108, 123103R, B60K 1500
Patent
active
041426126
ABSTRACT:
A vacuum operated road speed control system release valve with vacuum in the release chamber exerting a closing force on the valve. When the release circuit is opened to atmosphere by brake actuation, vacuum is lost in the release chamber and the valve is opened by the higher pressure in the control system. The open valve then connects the higher pressure side of the servomotor of the control system to vacuum to provide a powered release.
REFERENCES:
patent: 3388765 (1968-06-01), Sheppard
patent: 3960123 (1976-06-01), Berninger
patent: 3999622 (1976-12-01), Reed
patent: 4082158 (1978-04-01), Carol et al.
General Motors Corporation
McGraw D. D.
Wyche Benjamin W.
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