Low inertia flux motor rotary actuator

Details Low inertia flux motor rotary actuator Low inertia flux motor rotary actuator

1997-05-07

1998-01-06

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360104, 310 36, G11B 555

Patent

active

057061505

ABSTRACT:
A rotary actuator which carries magnetic read/write heads into engagement with a magnetic recording medium has a rotor which includes an arm, a pivot assembly and return path members extending from the pivot assembly. The stator includes a permanent magnet, a magnetic member and magnetic coils on the magnetic member. When the magnetic coils are energized, flux flowing through the magnetic member and the return path members aids or detracts from the magnetic flux generated by the permanent magnet.

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E. P. Rexford, "High Force Constant Voice Coil Motor For Rapid Seek", IBM TDB, vol. 12 No. 12, p. 2273 May 1970.
Disclosed Anonymously, "Multi-Stack Variable Reluctance Linear Step Motor", Research Disclosure, No. 248, Dec. 1984.

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