Apparatus to reduce push back time in solenoid valves
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United States of America Patent
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Jun 5, 2001
Grant Date -
N/A
app pub date -
Mar 16, 1999
filing date -
Mar 16, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A solenoid with liquid in the gaps between a moving and stationary element is disclosed that includes a secondary kick-back spring used to overcome the viscosity and surface tension effects of the liquid in the gap during the de-energizing phase of the solenoid action. Various secondary spring designs as well as surface shapes of the butt or plunger ends are possible in order to decrease the contact surface area of the ends of either the moving or stationary elements used in the solenoid and also are also used to decrease the viscosity and surface tension effects of the liquid.
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