Remote valve operators
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United States of America Patent
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-
Feb 11, 1986
Grant Date -
N/A
app pub date -
Aug 28, 1984
filing date -
Aug 28, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A remote valve positioning apparatus is provided in which a valve spool is resiliently loaded at each end to a normal position, hydraulic fluid is delivered selectively to one end or the other of the valve spool at a fixed flow and the valve is positioned by pressure drop caused by the fixed flow over an orifice proportional to the stroke of the valve spool.
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