Browse Prior Art Database

Flexible Disk Addressing/Accessing Technique

IP.com Disclosure Number: IPCOM000088723D
Original Publication Date: 1977-Jul-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 60K

Publishing Venue

IBM

Related People

McMurtry, DH: AUTHOR [+2]

Abstract

This article describes a flexible disk pack addressing/accessing apparatus and method employing air at a single preselected pressure selectively applied between two adjacent disks to split a disk pack, or between all disks to restore the pack to normal condition.

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Flexible Disk Addressing/Accessing Technique

This article describes a flexible disk pack addressing/accessing apparatus and method employing air at a single preselected pressure selectively applied between two adjacent disks to split a disk pack, or between all disks to restore the pack to normal condition.

A hollow, cylindrical piston selector valve 1 (Fig. 1) is slidably mounted within aligned bores 2a,2b in two axially spaced annular portions 3a,3b of housing 4. A plurality of flexible disks 5 are confined between portions 3a,3b and maintained in uniformly spaced relation by perforate or porous annular spacers 6. In its periphery, valve 1 has a plurality of small manifold ports 7 of diameter d1 circumferentially arranged on centers equal to the distance between adjacent disks. Projecting outwardly from valve 1 is an annular ring nozzle 8 having openings of a width d2.

At its enclosed end, valve 1 is sealingly and slidably mounted on an extension lla of conduit 11. Valve 1 preferably is also sealingly and slidably mounted on a conduit 12 that extends concentrically within and exteriorly of extension 11a and through the opposite enclosed end of valve 1. Opposite ends of conduit 12 extend through housing portions 3a,3b to communicate with opposite ends of an annular chamber 13.

In operation, pressure fluid from source PS is connected via two-way valve 14 selectively to conduits 11,12. In position a (Fig. 2), valve 14 is conditioned to supply fluid at pressure P2...