Power plants – Pressure fluid source and motor – Condition responsive control of motive fluid flow
Patent
1975-05-07
1976-08-31
Geoghegan, Edgar W.
Power plants
Pressure fluid source and motor
Condition responsive control of motive fluid flow
60468, F15B 1518
Patent
active
039771903
ABSTRACT:
A pump speed detecting device for diverse purposes in connection with various actuating devices disposed upon motor vehicles includes a pump, driven by a variable speed prime mover, for supplying fluid from a reservoir and discharging the same, at a flow rate proportional to the number of revolutions thereof, into a first conduit which is fluidically connected to a fluid motor. A flow control valve is fluidically connected to a first conduit so as to direct fluid from the first conduit into a second conduit which is in turn fluidically connected to the reservoir or the suction side of the pump. A first restriction is provided within the first conduit between the flow control valve and the fluid motor so as to control the flow control valve in response to the flow from the pump to the fluid motor. A second restriction is provided within the second conduit, and the actuating device is fluidically connected to the second conduit at a position just ahead of the orifice. Therefore, the actuating device is actuated by means of the fluid pressure which pressure increases as the number of revolutions of the pump increases.
REFERENCES:
patent: 2773351 (1956-12-01), Staude
patent: 2962971 (1960-12-01), Hallman
patent: 2981067 (1961-04-01), Clark et al.
patent: 3320968 (1967-05-01), Nuss
patent: 3908779 (1975-09-01), Inoue
Aisin Seiki Kabushiki Kaisha
Geoghegan Edgar W.
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