Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Patent
1992-05-08
1993-07-20
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
360 9703, G11B 3314
Patent
active
052298990
ABSTRACT:
The vapor drain is a device that permits steady state control of the composition of the atmosphere within a substantially sealed enclosure. For any fabricated enclosure the will be sources of vapor phase molecules: molecules evaporating from a deliberately installed lubricant reservoir, molecules outgassed from components, and molecules diffusing in from the outside world. The purpose of the vapor drain is to minimize the second two classes of molecules in the composition of the enclosure atmosphere as they are considered to be contaminants. An example application is a rigid disk magnetic data storage device which requires a monomelecular layer of lubricant on the disk and slider surfaces. The vapor drains suppresses the contaminant population by capturing a portion of all three sources of molecules in the vapor phase. The vapor drain is a filter which has an active element of at least one of activated carbon, silica gel, activated alumina, synthetic zeolite, and other material with a large surface to volume ratio with the ability to adsorb vapor components from the atmosphere.
REFERENCES:
patent: 4789913 (1988-12-01), Gregory
Patent Abstracts of Japan--Publication No. 59218633 Entitled "Formation of Lubricating Film on Magnetic Disk Surface".
Patent Abstracts of Japan--Publication No. 62184685 Entitled "Magnetic Disc Device".
Patent Abstracts of Japan--Publication No. 01236423 Entitled "Magnetic Recording Medium".
Patent Abstracts of Japan--Publication No. 02199691 Entitled "Magnetic Disk Device".
Patent Abstracts of Japan--Publication No. 61148691 Entitled "Magnetic Disk Device".
Brown Charles A.
Gregory Thomas A.
Keller Christopher G.
Wendt Herman R.
Zingher Arthur R.
Billion Richard E.
Heinz A. J.
International Business Machines - Corporation
Lahtinen Robert W.
Truelson Roy W.
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