Moving magnet-type actuator

Details Moving magnet-type actuator Moving magnet-type actuator

1993-07-20

1995-07-18

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

H01F 700, H01F 708

Patent

active

054345499

ABSTRACT:
In a moving magnet type actuator, a magnet moving body including at least two permanent magnets of which same poles are confronting each other and an intermediate magnetic substance. The magnet moving body is movably arranged inside at least three coils. The at least three coils are connected so that current flows in different directions with a zone between the permanent magnets as a boundary. Whereby thrust and efficiency of the moving magnet type actuator is improved.

REFERENCES:
patent: 3149255 (1964-09-01), Trench
patent: 4363980 (1982-12-01), Petersen
patent: 4407578 (1983-10-01), Petersen
patent: 4641072 (1987-02-01), Cummins
patent: 4785816 (1988-11-01), Dow et al.
patent: 4895505 (1990-01-01), Inaba et al.
patent: 5345206 (1994-09-01), Morcos

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