Static media/spinning head storage device

Details Static media/spinning head storage device Static media/spinning head storage device

1989-12-04

1992-07-07

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head transport with record stationary during transducing

G11B 548

Patent

active

051288206

ABSTRACT:
The present invention proposes a memory device comprising a fixed disc on the surface of which data may be stored, and rotating transducers or heads which may be positioned to access any location on the disc. The rotating heads are mounted on transducer arms which are designed in such a manner that the transducer seeks outward as it is rotated. Centrifugal force imparts a radial force on the arm which is movable in a low friction system along with the transducer, the radial force causing the transducer to move outward together with the radial arm with increasing rotational speed of the spindle motor.
A counteracting spring having a force in a direction opposite to the radial force would provide a radially inward force on the transducer arm, so that at any given speed the location of the transducer and the arm, and therefore the transducer's positional relationship to a desired track, is precisely determined by the balance of the inwardly acting spring force and the outwardly driving centrifugal force.

REFERENCES:
patent: 3633186 (1972-01-01), Lynott et al.
patent: 3821812 (1974-06-01), Kato
patent: 3885245 (1975-05-01), Nakatani

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