Power plants – Pressure fluid source and motor – With control means for structure storing work driving energy
Reexamination Certificate
2009-04-13
2010-12-28
Lazo, Thomas E (Department: 3745)
Power plants
Pressure fluid source and motor
With control means for structure storing work driving energy
C060S428000, C060S464000
Reexamination Certificate
active
07856817
ABSTRACT:
A hydraulic drive system for an actuator uses a pair of pressure compensated hydraulic machines to control flow to and from the drive chambers of the actuator by varying the controlled pressure of one of the machines. The machines are mechanically coupled to permit energy recovery and charge an accumulator to store supplies energy. The drive system may be combined with other services including a transmission for incorporation in a vehicle. The transmission uses a pressure compensated supply and torque control of the wheels.
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Haldex Hydraulics Corporation
Lazo Thomas E
St. Onge Steward Johnston & Reens LLC
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