Sealed solenoid and solenoid valve
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United States of America Patent
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Dec 8, 2015
Grant Date -
N/A
app pub date -
Dec 31, 2013
filing date -
Jan 2, 2013
priority date (Note) -
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Abstract
A sealed solenoid provides an improved actuator for valves and other devices, particular such devices used in extreme environments and/or with corrosive media. For example, the improved solenoid construction can be used to drive a precision flow control valve used in air and space applications, such as to control fuel and oxidizer combustion media in rocket and other thrust components. The solenoid is retained in a solenoid retainer to which is attached a rigid barrier that isolates the solenoid pole piece and coil from the media. A clapper disposed outside the barrier from the solenoid serves as the armature, receiving magnetic flux from the solenoid through the barrier without interference from the barrier. The barrier may be extremely thin and magnetically inert.
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