Motors: expansible chamber type – Fluid supply through diverse paths to single expansible chamber – One path includes restriction
Patent
1979-12-18
1981-12-22
Michalsky, Gerald A.
Motors: expansible chamber type
Fluid supply through diverse paths to single expansible chamber
One path includes restriction
91516, 91517, 91518, 13759613, F15B 1306, F15B 1309
Patent
active
043064884
ABSTRACT:
A pressure-compensated directional control valve assembly suitable for use in hydraulic power steering systems of off-highway working vehicles. The valve assembly integrally comprises a control valve for controlling communication between two engine-driven pumps and a steering cylinder, and a pressure compensator valve for controlling the fluid pressure delivered from the pumps to the control valve. Constantly comparing its outgoing fluid pressure with the fluid pressure at control ports of the control valve, the pressure compensator valve delivers to the control valve the pressurized fluid from one or both of the pumps. Any excess of the pressurized fluid is directed from the pressure compensator valve to, for example, an implement hoist cylinder of the work vehicle.
REFERENCES:
patent: 3455210 (1969-07-01), Allen
Kabushiki Kaisha Komatsu Seisakusho
Michalsky Gerald A.
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