Power plants – Pressure fluid source and motor – Having distinct cooling or lubricating structure
Reexamination Certificate
2011-06-07
2011-06-07
Lopez, F. Daniel (Department: 3745)
Power plants
Pressure fluid source and motor
Having distinct cooling or lubricating structure
C060S486000
Reexamination Certificate
active
07954317
ABSTRACT:
A hydraulic system for an agricultural vehicle is proposed. The hydraulic system comprises a main hydraulic circuit, which is fed with hydraulic fluid by a main hydraulic pump, a variable displacement charge pump which supplies charge pressure to the main hydraulic pump, and a lubricating hydraulic circuits. In order to keep efficiency losses on the vehicle to a minimum, particularly at high engine speeds, part of the hydraulic fluid delivered by the charge pump can be diverted to the lubricating hydraulic circuit.
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Bitter Marcus
Nordhoff Hendrik
Oberst Karsten
Deere & Company
Lopez F. Daniel
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