Actuating means for a servo valve
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United States of America Patent
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-
Apr 8, 1986
Grant Date -
N/A
app pub date -
Aug 15, 1984
filing date -
Aug 15, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention comprises a crank-linkage arrangement for a hydraulic servo valve, used on a road planer, to give the valve more sensitivity. It has a valve-operating crank coupled to a leverage-type linkage. The linkage responds to movements of a ground-engaging ski, which tracks the road surface, by displacing a same degree as does the ski, but by effecting a greater displacement of the crank. Limit stops on either sides of a limb of the linkage prevent any damaging overtravel of the crank.
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