Power plants – Pressure fluid source and motor – With control means for structure storing work driving energy
Reexamination Certificate
2007-11-14
2010-11-02
Lopez, F. Daniel (Department: 3745)
Power plants
Pressure fluid source and motor
With control means for structure storing work driving energy
C060S418000
Reexamination Certificate
active
07823379
ABSTRACT:
A method provides several modes for recovering hydraulic energy produced by an overrunning load acting on cylinders connected in parallel to a machine component. In one mode, fluid from first chambers in both cylinders is routed into the accumulator, while other fluid is directed into second chambers of those cylinders. In a different mode, fluid is routed from the first chamber of only one cylinder into the accumulator, and fluid from the first chamber of the other cylinder goes into the second chambers of both cylinders. Yet another mode comprises routing fluid from the first chambers of both cylinders into the second chambers of both cylinders. In still another mode, fluid from the first chambers of both cylinders goes into the return conduit while the second chambers of both cylinders receive fluid from a supply conduit. Several modes of reusing the recovered energy are described.
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Hamkins Eric P.
Pfaff Joseph L.
Stephenson Dwight B.
Tabor Keith A.
Haas George E.
HUSCO International Inc.
Lopez F. Daniel
Quarles & Brady LLP
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