Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Patent
1979-06-01
1981-05-19
Eddleman, Alfred H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
360133, G11B 2302, G11B 2504, G11B 582
Patent
active
042688787
ABSTRACT:
Apparatus is disclosed for circulating and filtering gas within a magnetic disc recording system. The apparatus includes a base plate which supports a rotating disc and a cover which comprises a control plate adapted to be positioned adjacent to and parallel to the rotating disc. A central opening is formed into the control plate, and a first gas chamber is placed in communication with the central opening through a filter chamber including a filter element. The cover and base plate cooperate to define a second gas chamber in communication with the outer edge of the rotating disc and the control plate. Openings are formed into the filter chamber for allowing gas flow from the second gas chamber through the filter element into the first gas chamber. The gas is circulated and filtered to remove particles suspended in the gas that might damage the gas bearing surfaces of magnetic transducers or the surface of the rotating disc.
REFERENCES:
patent: 3191179 (1965-06-01), Pelech et al.
patent: 3573771 (1971-04-01), Cockrell, Jr.
patent: 3740735 (1973-06-01), Gabor
patent: 3825951 (1974-07-01), Katsumori et al.
patent: 3863266 (1975-01-01), Hoshino
patent: 3912278 (1975-10-01), Teutsch
patent: 4002826 (1977-01-01), Iemenschot
patent: 4130845 (1978-12-01), Kulma
IBM Tech. Disc. Bull., R. J. Charlton, Disk Pack Air Pump, vol. 11, No. 8, Jan. 1969, p. 951.
Eddleman Alfred H.
New World Computer Company, Inc.
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