Hydraulic system having augmented pressure compensation

Details Hydraulic system having augmented pressure compensation Hydraulic system having augmented pressure compensation

2005-09-30

2009-11-10

Lopez, F. Daniel (Department: 3745)

Motors: expansible chamber type

With motive fluid valve

Relatively movable serial valves

C091S454000

Reexamination Certificate

active

07614336

ABSTRACT:
A hydraulic system is disclosed having a source of pressurized fluid, at least a one hydraulic actuator, and a first valve. The first valve has a first valve element movable relative to a first valve bore between a plurality of positions from a first position in which pressurized fluid is substantially blocked from flowing toward the at least one hydraulic actuator to a second position in which pressurized fluid is allowed to flow toward the at least one hydraulic actuator. The first valve element is configured to be selectively moved from a third position located between the first and second positions to a fourth position located between the third and second positions at least partially based on a pressure signal of pressurized fluid downstream of the first valve.

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