Electromagnetic rotary actuator

Details Electromagnetic rotary actuator Electromagnetic rotary actuator

1991-07-17

1993-05-25

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 90, 384121, H02K 122

Patent

active

052143376

ABSTRACT:
An electromagnetic rotary actuator includes a rotor and a stator with two bearings. The rotor, including a plurality of permanent magnets, is arranged between an annular disk of non-permanent magnetic material including a plurality of coils on cores and another annular disk of magnetic material. The rotor includes a central hub arranged between the tow bearings. The actuator includes a resilient washer positioned between one of the bearings and the central hub for eliminating a thrust clearance between the central hub and the other bearing.

REFERENCES:
patent: 3786289 (1974-01-01), Baclawski et al.
patent: 4340830 (1982-07-01), Hoyer-Ellesen
patent: 4776437 (1988-10-01), Ishibashi et al.
patent: 4873461 (1989-10-01), Brennan et al.
patent: 4874976 (1989-10-01), Ohsawa et al.
patent: 5008572 (1991-04-01), Marshall et al.

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