Power plants – Pressure fluid source and motor – With control means for structure storing work driving energy
Reexamination Certificate
2006-11-28
2006-11-28
Lazo, Thomas E. (Department: 3745)
Power plants
Pressure fluid source and motor
With control means for structure storing work driving energy
C060S469000
Reexamination Certificate
active
07140178
ABSTRACT:
A hydraulic arrangement is provided, including: a hydraulic cylinder that is provided with a first and a second chamber, a hydraulic reservoir, a hydraulic fluid feeder conveying hydraulic fluid, a hydraulic accumulator, a hydraulic line arranged between the hydraulic accumulator and the first chamber, a control valve arranged in the hydraulic line, a first supply line for the first chamber, a second supply line for the second chamber, and a controller with a lifting position, a lowering position, a neutral position, and a spring support position for controlling the hydraulic cylinder. The second supply line is fluidly connected to the hydraulic reservoir and the first and second supply lines are substantially prevented from being fluidly connected to the hydraulic fluid feeder when the controller is in the spring support position.
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Deere & Company
Lazo Thomas E.
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