Power plants – Pressure fluid source and motor – Condition responsive control of pump or motor displacement
Patent
1981-01-16
1983-10-11
Walton, George L.
Power plants
Pressure fluid source and motor
Condition responsive control of pump or motor displacement
417218, F16H 3946
Patent
active
044084536
ABSTRACT:
An hydraulic control system is disclosed which comprises a fluid reservoir (14), a variable displacement pump (12) having a fluid input connected to the reservoir and a fluid output, and a fluid pressure actuated displacement of the pump. A control valve (18) is connected to the fluid output of the variable displacement pump and to the reservoir and is adapted to control the flow of fluid to a fluid actuated device. The control valve includes means (44, 50, 52, 54, 56) for regulating flow of a signal fluid provided either by a constant displacement pump (46) or a pressure actuated flow control valve (47). A sensor valve (58) is placed in fluid communication with the signal fluid, the displacement control mechanism, and the reservoir for placing the signal fluid in communication with the displacement control mechanism or for placing the displacement control mechanism in communication with the reservoir, in response to changes in the pressure of the signal fluid, thereby controlling the displacement of the pump in response to the magnitude of the pressure of the signal fluid.
REFERENCES:
patent: 3777492 (1973-12-01), Boydell et al.
patent: 3788077 (1974-01-01), Johnson et al.
patent: 3947194 (1976-03-01), Schlecht
patent: 3963378 (1976-06-01), McMillian
patent: 4047590 (1977-09-01), Hoashi et al.
patent: 4067193 (1978-01-01), Norick
patent: 4168612 (1979-09-01), Nikolaus
patent: 4197705 (1980-04-01), Westveer
patent: 4216656 (1980-08-01), Hamma
General Signal Corporation
Walton George L.
LandOfFree
Hydraulic control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1268766