Electromagnetic transducer

Details Electromagnetic transducer Electromagnetic transducer

1995-01-17

1997-04-29

Brown, Peter R.

Chairs and seats

Combined

With electrical feature

601 57, A61H 100

Patent

active

056241550

ABSTRACT:
An improved electromagnetic actuator includes a first assembly, a second assembly disposed for relative movement with respect to the first assembly and at least a first flexure interconnecting the first assembly and the second assembly. The first assembly includes a core having a first magnetic pole of a first polarity in a second magnetic pole of a second polarity. The second assembly includes an electrical current conductive coil having a first coil portion and a second coil portion. The first magnetic pole is in a facing relationship to the first coil portion and the second magnetic pole is in a facing relationship to the second coil portion. The first coil portion and the second coil portion are arranged so that an electrical current in the coil develops added a flux current cross products at each of the first coil portion and the second coil portion. One of the first assembly and the second assembly includes a magnetic flux return path between the first coil portion and the second coil portion.

REFERENCES:
patent: 3880152 (1975-04-01), Nohmura
patent: 4005703 (1977-02-01), Rosen et al.
patent: 4023566 (1977-05-01), Martinmaas
patent: 4136685 (1979-01-01), Ramey
patent: 5086755 (1992-02-01), Schmid-Eilber
patent: 5097821 (1992-03-01), Eakin
patent: 5314403 (1994-05-01), Shaw

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