Power plants – Pressure fluid source and motor – Expansible chamber type volumetric responsive measuring...
Patent
1982-08-03
1985-11-19
Jordan, Charles T.
Power plants
Pressure fluid source and motor
Expansible chamber type volumetric responsive measuring...
60387, 60421, 60422, 60430, 91516, 91517, 91532, 180132, B62D 508, F15B 1306, F15B 1309, F16H 3946
Patent
active
045533890
ABSTRACT:
In a hydrostatic auxiliary power steering apparatus, a short-circuit passage of a control valve establishes a restricted flow path from a pump pressure line to a reservoir return line in the neutral position of the control valve wherein all other flow paths are blocked. A fixed flow restrictor in the pump pressure line conducts a continuous flow from one of two pumps connected to the pressure line for regulation of the fluid power steering circuit by the pressure drop across the flow restrictor. If one of the pumps is of the variable volume type, the pressure downstream of the flow restrictor is utilized to regulate pump flow adjustment. If fluid under operating pressure is supplied to both the fluid power steering circuit and another fluid operating circuit, a flow dividing valve controlled by the pressure differential across the flow restrictor distributes pressurized fluid between the two fluid circuits.
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Fassbender Rolf
Liebert Karl-Heinz
Tischer Werner
Jordan Charles T.
Klein Richard
Zahnradfabrik Friedrichshafen AG.
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