Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Retarded or delayed type
Patent
1985-09-30
1987-03-17
Mathews, A. A.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Retarded or delayed type
354230, 3542711, 335222, G03B 902, G03B 924
Patent
active
046503072
ABSTRACT:
An electromagnetic actuator operable with a source of electric current has two overlapping, oppositely movable armatures that are mounted on resiliently flexible cantilever spring members and coupled together by resiliently flexible spring elements, to provide coordinated cooperative movements of the armatures when energized. The armatures have conductive coils thereon that are connectable to the current source through the spring members and spring elements. A permanent magnet and a pair of flux return plates are disposed near the armatures to provide a suitable magnetic path through the coils. Current flowing through the coils in the magnetic path generates oppositely directed forces on the two armatures. Structure is provided for constraining the coupling spring elements to move in only one direction when such forces are generated, thereby facilitating coordination of desired armature movements in directions substantially opposite to each other and perpendicular to the one direction.
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Capobianco Richard N.
White David L.
Dixon William C.
Eastman Kodak Company
Mathews A. A.
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