High-temperature and high-vibration capable armature assemblies for torque motor valve actuators
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United States of America Patent
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Feb 21, 2017
Grant Date -
Jul 28, 2016
app pub date -
Jan 23, 2015
filing date -
Jan 23, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
Armature springs configured to be coupled to and bias an armature of a torque motor valve actuator to a null position are provided. The armature spring comprises a rigid central portion, opposed end portions, and a flexible portion intermediate the rigid central portion and each end portion. The rigid central portion, the opposed end portions, and the flexible portions define a variable cross section torsion bar with the flexible portions comprising reduced cross-sectional portions of the torsion bar relative to the rigid central portion and opposed end portions. Armature assemblies and torque motor valve actuators are also provided.
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