Dynamic information storage or retrieval – Dynamic mechanism subsystem – Having power driven transducer assembly
Patent
1989-02-03
1991-05-14
Ip, Paul
Dynamic information storage or retrieval
Dynamic mechanism subsystem
Having power driven transducer assembly
369249, 369247, 318135, 318687, G11B 2110
Patent
active
050162381
ABSTRACT:
Disclosed herein is a linear actuator for controlling the movement of a payload along a linear trajectory. Such actuator is particularly useful, for example, in controlling the radial position of a write/read head in an optical or magnetic recorder/player. The actuator comprises a simple elongated ferromagnetic member, preferably having a substantially triangular cross-section. Such member is surrounded by a coil to which a payload-bearing carriage is rigidly connected. Bearing devices are provided for slidably mounting the carriage for movement on and along the ferromagnetic member. A plurality of magnets serve to establish a magnetic field through which the coil, upon applicaiton of a current, is advanced along the ferromagnetic member. The ferromagnetic member serves the dual function of conducting magnetic flux and guiding the payload along the linear trajectory.
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Heppner Paul
Shtipelman Boris A.
Eastman Kodak Company
Ip Paul
Kurz Warren W.
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