Actuator and method of manufacturing thereof

Details Actuator and method of manufacturing thereof Actuator and method of manufacturing thereof

1989-01-27

1991-10-29

Envall, Jr., Roy N.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4422, 369 4414, 359822, 359823, G02B 704, G11B 1104

Patent

active

050620959

ABSTRACT:
An actuator rotatable about a support shaft rectilinearly movable along axis of a shaft and rotatably movable about the shaft includes a cylindrical magnet extending about the shaft. The cylindrical magnet has a plurality of poles in the radial direction and magnetized boundaries between poles of opposite polarity extending in a circumferential direction of the magnet and extending in an axial direction of the magnet. A plurality of yokes are provided to define magnetic poles coupled in facing relationship with the magnetic boundaries of a cylindrical magnet and having coils coupled thereto to define the magnetic poles.

REFERENCES:
patent: 4100576 (1978-07-01), Ditthardt
patent: 4561081 (1985-12-01), Janssen et al.
patent: 4734899 (1988-03-01), Van Sluys

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