Eddy current inductive drive electromechanical liner actuator and switching arrangement
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United States of America Patent
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Aug 17, 2010
Grant Date -
Mar 23, 2006
app pub date -
May 20, 2005
filing date -
May 20, 2004
priority date (Note) -
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Abstract
The present invention is directed to an inductively driven electromagnetic linear actuator arrangement employing eddy currents induced by a fixed drive coil to drive its armature. Eddy current focusing fields are employed to direct the eddy currents using Lorentz forces to maximize armature speed. The armature includes a shorted driven coil in a DC magnetic field. This can be supplied by a permanent magnet. When current is applied, a force is felt by the coil in a direction perpendicular to the magnetic field. Such an actuator is well suited for electrical switching applications including transfer switching applications, circuit breaker applications, and ground fault interrupter applications.
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