Apparatus for adjusting the working fluid pressure
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United States of America Patent
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-
Aug 2, 1994
Grant Date -
N/A
app pub date -
Dec 7, 1992
filing date -
Dec 7, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for adjusting the pressure of working fluid provided to the load or user via a hydraulically actuatable control valve is provided. The apparatus includes a comparator that compares a given or desired control pressure for the control valve with the predominant present load pressure. The resulting pressure differential is used to re-adjust the control valve or to re-adjust a pressure compensator positioned upstream of the control valve with respect to the direction of the flow of working fluid flowing to the user.
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