Floating action type servo-valve
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United States of America Patent
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Aug 25, 2015
Grant Date -
Jul 18, 2013
app pub date -
May 3, 2012
filing date -
May 5, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention relates to a valve, and a floating action type servo-valve used for fluid control, including a valve body, a torque motor, a pilot stage and a power stage control mechanism. An upper valve block, an intermediate block and a lower valve block are stacked and fastened by a fastener in the valve body. A torsion-bar spring of the torque motor passes through the center of an armature and is fixed to the valve body with a stand. A pilot stage revolving shaft and a power stage revolving stage are provided in a same central line, with a mating between the pilot stage revolving shaft and the upper valve block and a mating between the power stage revolving shaft and the lower valve block. The servo valve includes a shifting enlargement mechanism constitute by a shifting fork and a shifting lever.
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