Browse Prior Art Database

Disk Selection in a Stack of Stabilized Flexible Disks

IP.com Disclosure Number: IPCOM000088797D
Original Publication Date: 1977-Aug-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 76K

Publishing Venue

IBM

Related People

Kleczkowski, SP: AUTHOR [+2]

Abstract

This article relates to a magnetic memory apparatus having a plurality of flexible record disks mounted for rotation on a tubular spindle and receiving stabilizing air from an internal portion of the spindle. Selection of a disk by creating an access opening is a critical and important step. During such access-opening creation, it is important that the stability of the stack of disks be maintained. In some versions of such memory apparatus, an axially movable piston disposed within the tubular spindle controls air flow for generating an access opening. For example, a jet of air received from coaxial tube jet air supplies a circumferentially aligned radially directed air jet for creating an access opening.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 69% of the total text.

Page 1 of 2

Disk Selection in a Stack of Stabilized Flexible Disks

This article relates to a magnetic memory apparatus having a plurality of flexible record disks mounted for rotation on a tubular spindle and receiving stabilizing air from an internal portion of the spindle. Selection of a disk by creating an access opening is a critical and important step. During such access- opening creation, it is important that the stability of the stack of disks be maintained. In some versions of such memory apparatus, an axially movable piston disposed within the tubular spindle controls air flow for generating an access opening. For example, a jet of air received from coaxial tube jet air supplies a circumferentially aligned radially directed air jet for creating an access opening.

The disk A to be transduced is preferably backed by fully spaced stable disks. To this end, piston air supplied through an annular chamber C ensures a high degree of stabilization of the disk backing onto disk A. On the opposite axial side of the access opening, disks should be in a closed stable state. Such closed stable state requires that the air flow be restricted with the resulting reduced air flow causing the disk to collapse axially together to a closed stable state. To this end, a plurality of circumferential air flow restrictors are mounted about the piston air tube to one side of the axially movable piston, whereby axial air flow is increasingly reduced. The disks axially remote from the restricto...