Air damped head suspension

Details Air damped head suspension Air damped head suspension

1974-07-01

1976-02-03

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360104, G11B 560, G11B 1732, G11B 2120

Patent

active

039368815

ABSTRACT:
In a flexible disk magnetic storage device, a suspension assembly for holding a transducing head in proper transducing relationship to a target disk regardless of the radial position of the track. The assembly incorporates a chamber which is filled with gaseous fluid and expanded in order to move a chamber enclosing member with a transducing head mounted thereon. The head is moved axially into transducing relationship with the disk surface and continues to move until the disk surface exerts counter-balancing axial forces on the head to prevent further movement. An escape path is provided so that a small amount of fluid continually escapes from the chamber equal to the rate at which fluid is introduced into the chamber when all axial forces are in balance. Such an assembly damps the rapidity of any change in axial position of the head induced by variations of the flexible disk surface away from a constant plane during rotation.
The assembly also provides a constant mating force of head to disk over a working range of axial head movement by providing an escape path of constant length, i.e., constant flow resistance.

REFERENCES:
patent: 3249701 (1966-05-01), Silver
patent: 3268877 (1966-08-01), Hagen
patent: 3769467 (1973-10-01), Gabor
patent: 3786457 (1974-01-01), Kahn
patent: 3829622 (1974-08-01), Elliot
patent: 3838462 (1974-09-01), Barbeau et al.

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