Two stage pressure regulation system for variable displacement hydraulic pumps
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United States of America Patent
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-
Apr 30, 2013
Grant Date -
Apr 1, 2010
app pub date -
Sep 6, 2007
filing date -
Sep 8, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A pump having a housing with an actuator member positioned inside for controlling the flow generated by the pump. A first decrease port is connected to the housing and has a surface area in operable contact with the actuator member. A second decrease port is connected to the housing and has a surface area that is operable contact with the actuator member. A valve is connected to the second decrease port for controlling the flow of fluid to the second decrease port. A suction passage is connected to the housing and drawings fluid to the housing using the actuator member. A discharge passage is connected to the housing so that fluid providing an exit for fluid that has been pressurized by the actuator member.
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