Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1981-11-16
1984-05-15
Tupper, Robert S.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360103, G11B 2120, G11B 560
Patent
active
044491557
ABSTRACT:
In an apparatus of the type including a magnetic transducer head adapted for flying on a fluid bearing in close proximity to a transducing surface and a gimbal apparatus to which the head is mounted for flying so as to provide flexural freedom of rotation of the head around roll and pitch axes parallel to the transducing surface and flexural freedom of translation in the direction of an axis perpendicular to the surface while restraining rotation of the head about the axis perpendicular to the surface and translation of the head in directions parallel to the surface, the gimbal apparatus comprising a thin, resilient, gimbal sheet having an external shape and interior openings defining an outer ring attachable to a gimbal sheet support at substantially opposite points on the outer ring and an inner ring spaced apart from the outer ring and attached to it by a pair of webs intersecting the outer ring at opposite interior edges between the points at which the outer ring is attached to the gimbal sheet support, the inner ring being attached to the transducer head at a point between the two webs, there is disclosed an improvement wherein both of the outer and inner rings have material removed therefrom to form a modified truss-type structure to increase the flexural freedom of translation in the direction of the axis perpendicular to the surface without upsetting the rigidity of the gimbal sheet in the plane thereof.
REFERENCES:
patent: 3896495 (1975-07-01), Beecroft
patent: 4058843 (1977-11-01), Gyi
patent: 4163267 (1979-07-01), DeMoss
patent: 4306258 (1981-12-01), Higashiyama et al.
patent: 4309732 (1982-01-01), Kronfeld et al.
Meier Markus
Sutton David A.
DMA Systems Corporation
Tupper Robert S.
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