Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1995-04-07
1998-01-20
Font, Frank G.
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
369 14, 369110, 360 59, 360103, 360114, 360125, 336 61, 336 83, 336212, 336233, 174 163, G11B 1100, G11B 5127, H01F 2724
Patent
active
057107459
ABSTRACT:
A bias coil assembly for use in combination with a magnetomotive generator such as employed in a magneto-optical disc drive. The assembly includes a return yoke having a body portion and a tip having a predetermined thickness and extending beyond the body portion. A winding for receiving electric current is wound around the body portion of the yoke so that the winding is contained below the tip. A first plate is disposed on the winding and includes at least one heat-radiating finger extending substantially around the winding without increasing the vertical height of the assembly. A second plate is disposed on the winding in a magnetic circuit with the first plate and the return yoke so that when the winding is connected to a source of power, the tip receives lines of magnetic flux that are channeled through the body portion while the at least one flange radiates thermal energy thereby produced.
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Bollella Donald
Braun Robert T.
Clark Ronald J.
Discovision Associates
Eisenberg Jason D. Vierra
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