Hydraulic pump system and method of operation
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United States of America Patent
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Feb 21, 2017
Grant Date -
Oct 24, 2013
app pub date -
Apr 23, 2013
filing date -
Apr 23, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A fluid management system includes a hydraulic main pump fluidly connected to a load, an accumulator fluidly connected to the hydraulic main pump, a secondary pump, a fluid preparation system fluidly connected between an outlet of the secondary pump and an inlet of the hydraulic main pump, a reservoir, and a valve system fluidly connecting the reservoir, an outlet of the hydraulic main pump, and the secondary pump inlet. The system is at least operable between a run mode, wherein the secondary pump and accumulator cooperatively maintain the pressure within the hydraulic main pump, and a charging mode, wherein the secondary pump pumps fluid into the accumulator until a threshold volume is reached.
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