Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1989-01-24
1991-07-16
Severin, David J.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360104, G11B 555
Patent
active
050329413
ABSTRACT:
A magnetic head feeding device suitable for mass production while providing a higher tolerance to vibration and shock is provided. A carriage is rotatably and slideably mounted on a guide shaft. A magnetic head is mounted on the carriage as is a rack. A pinion mounted on a motor, engages the rack to move the rack along the guide shaft in a reciprocating fashion when the pinion is rotated. A magnetic coupling between the carriage and a fixed support provides an attractive force which acts as an engagement force between the rack and the pinion without applying a contact force on the carriage. A stop is provided at each end of the rack and is integrally formed with the rack so that the stop prevents the pinion from rotating and the carriage from moving once the carriage has reached a desired outer limit of motion in either direction. A contour wall is integrally formed with the rack at a position opposed to the rack to prevent disengagement of the pinion from the rack.
REFERENCES:
patent: 3614579 (1971-10-01), Fulton
patent: 4143409 (1979-03-01), Iwabuchi et al.
patent: 4428012 (1984-01-01), Applequist
patent: 4510543 (1985-04-01), Ohta et al.
patent: 4654737 (1987-03-01), Hopkins et al.
patent: 4658315 (1987-04-01), Seki et al.
patent: 4709285 (1987-11-01), Enami et al.
Aruga Tomoe
Tokouchi Hideya
Seiko Epson Corporation
Severin David J.
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