Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1991-03-08
1992-08-25
Picard, Leo P.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
335306, 381199, H01F 708, H01F 702, H04R 2500
Patent
active
051422603
ABSTRACT:
A returnless coil motor assembly comprising a voice coil, first and second magnets, the poles of the first and second magnets providing aligned, opposing lines of force in first and second opposite directions, a first spacer having a first face adjacent a pole of the first magnet and a second opposite face, a second spacer having a first face adjacent the like pole of the second magnet and a second opposite face, a third magnet oriented between the second faces of the first and second spacers, and the voice coil mounted in close proximity to the third magnet, the third magnet providing lines of force extending in a third direction generally transverse to both the first and second directions, and the voice coil having a direction of motion extending generally perpendicular to the third direction.
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Barrera Ramon
Harman International Industries Incorporated
Picard Leo P.
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