Torque motor

Details Torque motor Torque motor

1993-09-17

1995-12-05

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335229, 335258, 335262, 335273, 335274, 335275, H01F 708

Patent

active

054732980

ABSTRACT:
An improved torque motor includes a supporting body (3) having a U-shaped cross-section and formed of a magnetizable material, includes at least two magnet structures (7, 8) adapted to be mounted on the body, includes first polepieces (10-13) mounted on the magnet structures, and includes an armature (5) mounted for movement in working air gaps (16, 17) between the first polepieces. Permanent magnets (10, 11) are mounted on the first polepieces. A second polepiece is spaced from the armature by the presence of a non-working air gap (21). At least one control coil (20) surrounding the second pole between the magnet structures (7, 8).

REFERENCES:
patent: 1825482 (1931-09-01), Sosinski
patent: 3203447 (1965-08-01), Bremner
patent: 3323090 (1967-05-01), O'Brien
patent: 3435393 (1969-03-01), Meisel
patent: 3533032 (1970-10-01), Schmdel et al.
patent: 3571769 (1971-03-01), Pegram
patent: 4560969 (1985-12-01), Nicholson
patent: 4682063 (1987-07-01), Lembke
patent: 4881054 (1989-11-01), Polgar

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