Electromagnetic rotary actuator

Details Electromagnetic rotary actuator Electromagnetic rotary actuator

1995-07-05

1997-11-04

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 36, H02K 710, H02K 3300

Patent

active

056843496

ABSTRACT:
A ring rotor is supported free to rotate in a housing, and a plurality of magnets are provided on the inner circumference of the ring rotor having their N and S poles oriented alternately. A stator is fixed to the housing on the inner side of the ring rotor, this stator having a plurality of coils. A switch is provided in the energizing path of the coils, and a mechanism for stopping the ring rotor at a predetermined rotation position is also provided. When one of the coils is energized via the switch, the ring rotor is caused to rotate, and is then held by the stop mechanism. Since the coils are not energized after the operation, power is economized, and burning of the coils is prevented.

REFERENCES:
patent: 3665231 (1972-05-01), Wendler
patent: 3760909 (1973-09-01), Grove
patent: 4142610 (1979-03-01), Alexander et al.
patent: 4280072 (1981-07-01), Gotou et al.
patent: 4442392 (1984-04-01), Hore
patent: 4628752 (1986-12-01), Paxton et al.
patent: 4647801 (1987-03-01), Swartwout
patent: 4890027 (1989-12-01), Bohner et al.
patent: 5034670 (1991-07-01), Tominaga
patent: 5189354 (1993-02-01), Tominaga et al.
patent: 5389862 (1995-02-01), Tominaga
patent: 5413566 (1995-05-01), Sevrain et al.

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