Actuator comprising a rotatable magnet body; actuator unit compr

Details Actuator comprising a rotatable magnet body; actuator unit compr Actuator comprising a rotatable magnet body; actuator unit compr

1995-10-03

1997-11-25

Edun, Muhammad N.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4411, G11B 712

Patent

active

056919654

ABSTRACT:
An actuator comprises a permanent magnet body (1) and coil means for cooperation with the magnet body. The magnet body is rotatable about an axis of rotation (7) between, for example two, stop positions. The coil means exclusively comprise at least one active coil section (9a, 11a) of an electrical coil, which coil section extends parallel to the axis of rotation of the magnet body and substantially faces a magnet pole in a stop position of the magnet body.

REFERENCES:
patent: 5023861 (1991-06-01), Champagne et al.
patent: 5228017 (1993-07-01), Metsuzaki et al.
patent: 5291345 (1994-03-01), Umeda et al.
patent: 5351221 (1994-09-01), Ohno
patent: 5361243 (1994-11-01), Kasahara
K.R. Sharp, "Multiaxis Optomechanics Key to 2-D Bar code Scanning", Photonics Spectra, Dec. 1992, pp. 98-100.

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