Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1981-06-29
1983-11-15
Kilgore, Robert Martin
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360 78, 360 98, G11B 555, G11B 2108, G11B 5012
Patent
active
044159412
ABSTRACT:
A linear actuator for translating accessing transducers such as read/write heads along a straight line path of travel relative to a rotating magnetic disk includes a carriage, a flat coil mounted to the disk and having an effective winding extending transversely at the rear end of the carriage, one pair of rollers mounted at right angles to each other at one side of the carriage in rolling engagement upon a cylindrical guide rail, two pairs of rollers similarly mounted at the other side of the carriage in rolling engagement upon a second guide rail. The second guide rail is fixedly mounted to a base frame; the other guide rail is pivotally mounted parallel to the other rail and is biased by a spring to preload the single pair of rollers against the pivotal rail. A pair of block magnets are mounted at the rear end of the base frame with a gap therebetween that is aligned with the path of travel of the effective winding. The pairs of rollers are symmetrical about the plane of the coil to minimize bending moments and thus enable rapid accessing without inducing vibrations.
REFERENCES:
patent: 3735163 (1973-05-01), Dijkstra
patent: 3922720 (1975-11-01), Caletti
patent: 4012780 (1977-03-01), Johnson
patent: 4196456 (1980-04-01), Manzke
patent: 4318145 (1982-03-01), Frandsen
patent: 4322762 (1982-03-01), Manzke
Farmer Paul L.
Gibeau Frank C.
Atasi Corporation
Caserza Steven F.
Kilgore Robert Martin
MacDonald Thomas S.
MacPherson Alan H.
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