Rotary head assembly

Details Rotary head assembly Rotary head assembly

1981-05-14

1983-07-05

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Head

Head accessory

36013024, G11B 510, G11B 2118

Patent

active

043921680

ABSTRACT:
A rotary head assembly having a central stationary shaft one end of which is securely joined to a lower housing, a bearing spacer securely fitted over the stationary shaft at the other end thereof and a rotary sleeve disposed for rotation about the common axis of the stationary shaft and the bearing spacer, whereby a hydraulic bearing is defined by the bearing spacer, the rotary sleeve and a lubricant filled into the space between the bearing spacer and the rotary sleeve, and a hydraulic passage is defined between the stationary shaft and the rotary sleeve. The lower end of the lubricant passage is provided with a magnetic sealing means which seals a magnetic liquid so as to prevent the leakage to the exterior of the magnetic liquid or the lubricant. An upper cylinder which carries one or more video signal recording and reproducing heads is removably mounted on the rotary sleeve.

REFERENCES:
patent: 3602555 (1971-08-01), Hendler
patent: 3877761 (1975-04-01), Boden et al.
patent: 3890019 (1975-06-01), Boden et al.
patent: 3918773 (1975-11-01), Tuffia
patent: 3998502 (1976-12-01), Walter et al.
patent: 4043612 (1977-08-01), Orcutt
patent: 4065279 (1977-12-01), McCullough

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