Browse Prior Art Database

Double Bernoulli Disk Configuration

IP.com Disclosure Number: IPCOM000087629D
Original Publication Date: 1977-Feb-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

McMurtry, DH: AUTHOR

Abstract

The conventional capacity of Bernoulli disk files is doubled by flying two flexible disks 1 and 2 over the top and bottom surfaces of a Bernoulli plate 3 (Fig. 1). The disks are mounted on shaft 4 and rotated by motor 5. The heads 6 and 7 access the inner surfaces of the disks 1 and 2 by means of a slot 8 in the backing plate. The heads are moved radially of the disks by actuator 9. In Fig. 2 the concept is extended to a plural Bernoulli plate file.

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Double Bernoulli Disk Configuration

The conventional capacity of Bernoulli disk files is doubled by flying two flexible disks 1 and 2 over the top and bottom surfaces of a Bernoulli plate 3 (Fig.
1). The disks are mounted on shaft 4 and rotated by motor 5. The heads 6 and 7 access the inner surfaces of the disks 1 and 2 by means of a slot 8 in the backing plate. The heads are moved radially of the disks by actuator 9. In Fig. 2 the concept is extended to a plural Bernoulli plate file.

To prevent droop of the lower disks under gravity while at rest, a shield plate (not shown) can be inserted beneath each such disk. In the Fig. 2 environment, the spacing of the plates and disks can be made close enough to provide similar support for all but the lowest disk. Alternatively, the files can be operated with the disks in a vertical plane with or without the spacing or shield plates mentioned above.

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