Power plants – Pressure fluid source and motor – Having means controlling or attenuating shock vibration,...
Reexamination Certificate
2008-03-04
2008-03-04
Lazo, Thomas E. (Department: 3745)
Power plants
Pressure fluid source and motor
Having means controlling or attenuating shock vibration,...
C060S413000
Reexamination Certificate
active
07337610
ABSTRACT:
A hydraulic arrangement is provided for a spring support system. The hydraulic circuit arrangement includes a hydraulic cylinder, a hydraulic tank, a hydraulic conveying device, a hydraulic accumulator, a first selector valve arranged between the hydraulic accumulator and the hydraulic cylinder, a control implement with at least three switch positions, that include a lifting position, a lowering position and a neutral position for the hydraulic cylinder and a pipe break safety arrangement arranged between the control implement and the hydraulic cylinder. In order to permit the opening of the pipe break safety arrangement, a first control pressure line extends between the pipe break safety arrangement and a conveying device and first switching devices are arranged in the first control pressure line so that a control pressure can be applied to the first control pressure line by switching the first switching devices and the pipe break safety arrangement can be controlled to open.
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Deere & Company
Lazo Thomas E.
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