SOLENOID COIL HAVING AN ENHANCED MAGNETIC FIELD
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United States of America Patent
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Apr 21, 2015
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Mar 16, 2012
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Abstract
An improved solenoid having an enhanced magnetic field and failsafe operation is provided, wherein a primary winding and a secondary winding are constructed such that the combined force imparted on a plunger by both windings energized together is greater than the sum of the forces imparted by the primary and secondary windings energized separately, resulting in a smaller solenoid capable of providing a predetermined force, and providing a solenoid capable of tripping a circuit interrupting latch even if one of the windings is broken.
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