Power plants – Pressure fluid source and motor – With control means for structure storing work driving energy
Reexamination Certificate
2007-06-26
2007-06-26
Leslie, Michael (Department: 3745)
Power plants
Pressure fluid source and motor
With control means for structure storing work driving energy
C060S475000, C060S476000
Reexamination Certificate
active
11245376
ABSTRACT:
A hydraulic system and work machine are provided, the hydraulic system including at least one hydraulic cylinder with a first port and a second port connected by a first fluid passage. A first pump, which is a bi-directional hydraulic pump is positioned within the first fluid passage, and a second pump is positioned in parallel with the first pump and disposed within a second fluid passage. An accumulator fluidly connects with the second fluid passage.
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Brinkman Jason Lee
Gupta Pinaki
Caterpillar Inc
Leslie Michael
Liell & McNeil
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