Disk spacer ring having air pumps

Details Disk spacer ring having air pumps Disk spacer ring having air pumps

1988-04-18

1989-10-10

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9808, 360133, G11B 502, G11B 2300

Patent

active

048735949

ABSTRACT:
A disk pack spacer ring has formed thereon a plurality of pairs of intercommunicating scoop/pump channels which prevent formation of solid body rotation of air between closely spaced disk surfaces so that the entire space between the disk surfaces is ventilated. A scoop channel angled into the direction of rotation scoops air into the channel, and a intercommunicating pump channel angled away from the direction of rotation pumps the scooped air out in a direction opposite to disk rotation. In one embodiment, the scoop and pump channels are disposed on upper and lower surfaces of the ring and a flow through channel disposed on the inner surface of the ring connects the two.

REFERENCES:
patent: 4538192 (1985-08-01), White et al.
patent: 4562499 (1985-12-01), Mizoshita

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