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Adjusting Pressure In Disk Enclosures Disclosure Number: IPCOM000053490D
Original Publication Date: 1980-Jan-01
Included in the Prior Art Database: 2005-Feb-12

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Bolton, IW [+details]


In one known type of magnetic disk file, the disks are contained in a substantially sealed enclosure and are mounted for rotation on a hub and spindle, the spindle passing through bearings in a wall of the enclosure. When the disks rotate, a pressure differential is created within the enclosure which may be augmented by fan blades on the hub to cause air flow through a main filter for removing contaminants. A breather filter is also employed which connects a desired region of the interior of the file to atmosphere and allows limited airflow therebetween. The breather filter limits pressure changes within the enclosure when its temperature changes.