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1. WO1985000474 - MOTOR WITH "SPLIT" BACK-MAGNET ARRAY

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Publication Number WO/1985/000474
Publication Date 31.01.1985
International Application No. PCT/US1984/001078
International Filing Date 11.07.1984
IPC
G11B 21/02 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
21Head arrangements not specific to the method of recording or reproducing
02Driving or moving of heads
H02K 41/035 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
41Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
02Linear motors; Sectional motors
035DC motors; Unipolar motors
CPC
G11B 21/02
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
21Head arrangements not specific to the method of recording or reproducing
02Driving or moving of heads
H02K 41/0356
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
41Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
02Linear motors; Sectional motors
035DC motors; Unipolar motors
0352Unipolar motors
0354Lorentz force motors, e.g. voice coil motors
0356moving along a straight path
Applicants
  • MEMOREX CORPORATION [US]/[US]
Inventors
  • MORRIS, Frank, I.
Agents
  • CHUNG, Edmund, M.
Priority Data
512, 87612.07.1983US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MOTOR WITH "SPLIT" BACK-MAGNET ARRAY
(FR) MOTEUR AVEC DISPOSITIF DE CONTRE-AIMANT DIVISE
Abstract
(EN)
A disc drive arrangement including read/write head actuator driven by an improved voice coil motor (35), having ceramic back-magnets (3-M') that are subdivided to give improved magnetic characteristics and operation (increased working flux, increased efficiency and effective power acceleration for a given current), thus decreasing access time.
(FR)
Un agencement d'entraînement de disque comprend un dispositif d'actionnement d'une tête de lecture/écriture entraîné par un moteur à bobine amélioré (35) ayant des contre-aimants en céramique (3-M') qui sont subdivisés pour obtenir des caractéristiques magnétiques et un fonctionnement améliorés (flux de travail accru, rendement amélioré et accélération de puissance effective améliorée pour une intensité de courant donnée), permettant ainsi de réduire le temps d'accès.
Also published as
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