Omar Walley Phones & Addresses
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Urbana, OH
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Westerville, OH
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Mansfield, OH
Publications
Us Patents
Electromagnetic Actuator
View pageUS Patent:
45815976, Apr 8, 1986
Filed:
Jan 13, 1984
Appl. No.:
6/570513
Inventors:
Omar C. Walley - Mansfield OH
Assignee:
Figgie International Inc. - Richmond VA
International Classification:
H01H 5127
US Classification:
335179
Abstract:
An electromagnetic actuator is presented wherein a pair of permanent magnets are sandwiched between respective pairs of pole pieces. The pole pieces communicate with an armature to effect the state of actuation of the actuator. A pair of electromagnets, consisting of a wire-wound core, is maintained in close relationship to the pair of permanent magnets, a pole piece separating each permanent magnet from its associated electromagnet. When the electromagnets are not energized, the permanent magnets create a magnetic circuit which pulls the armature into a touch position with one pole piece of each permanent magnet. When the electromagnets are energized, a magnetic field is created which opposes and effectively cancels the magnetic fields of the permanent magnets, creating another magnetic circuit drawing the armature into a touch position with the other pole pieces. When the electromagnets are not energized, the armature is held in a first position by the permanent magnets alone. When energized, the holding power is achieved by the electromagnets, and the permanent magnets are effectively removed from the system.