Rotary actuator

Details Rotary actuator Rotary actuator

1991-03-28

1992-05-12

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310254, 310 89, 310 49R, 310231, H02K 112, H02K 500

Patent

active

051131072

ABSTRACT:
Disclosed is a rotary actuator having a rotor and a stator which rotatably supports the rotor. The stator includes a coil bobbin, a stator coil, a pair of tapered poles and a yoke. The coil bobbin is formed from a non-magnetic material into a cylindrical shape and has the stator coil wound circumferentially thereabout. The pair of poles are disposed on the internal circumference of the coil bobbin. The yoke covers the outer surface of the coil bobbin and is in contact with the respective poles. The rotor comprises a rotary shaft and a diametrically polarized cylindrical magnet. The rotary shaft is inserted into the coil bobbin and is rotatably supported by the yoke. The magnet is carried by the circumference of the rotary shaft and is rotatable integrally therewith.

REFERENCES:
patent: 4200971 (1980-05-01), Shimizu et al.
patent: 4347457 (1982-08-01), Sakamoto
patent: 4558293 (1985-12-01), Haneda et al.
patent: 4841190 (1989-06-01), Matsushita et al.
patent: 4893038 (1989-01-01), Miyzawa
patent: 4970462 (1990-11-01), Richmond

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