Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Flexible Disk Pack Assembly

IP.com Disclosure Number: IPCOM000085707D
Original Publication Date: 1976-May-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Nordeng, L: AUTHOR

Abstract

Flexible disks 10 are provided with center holes 12 of nonround configuration, and disks 10 fit on spindle 14 also of nonround configuration to prevent any slippage of disks 10 on spindle 14.

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 84% of the total text.

Page 1 of 2

Flexible Disk Pack Assembly

Flexible disks 10 are provided with center holes 12 of nonround configuration, and disks 10 fit on spindle 14 also of nonround configuration to prevent any slippage of disks 10 on spindle 14.

Holes 12 are provided with three flat sides 12a and three arcs 12b. The centers of each of the flat sides 12a are at a distance a from the center C of each hole 12, and the arcs 12b are each formed by a radius b which has its center at c offset from the center C toward the opposite flat side 12a by a distance d.

Spindle 14 has three opposite flat surfaces 14a and three arc-shaped surface portions 14b. Flat surface portions 14a are spaced the distance a from the longitudinal center X of spindle 14, and the arc-shaped surface portions 14b are each formed on a radius f from the center X of spindle 14, which has a length slightly greater than the length (b minus d). Parallel grooves 16 are cut into the arc-shaped spindle portions 14b, and each groove 16 has a tapered side portion 16a and a portion 16b disposed on a plane at right angles to the longitudinal center X of spindle 14. The roots of grooves 16 are on radii r taken from center X.

Disks 10 may therefore be moved in direction A onto spindle 14.

Due to the flexible nature of the material of disks 10, they snap successively into the grooves 16. Each of disks 10 may thus be positioned in one of grooves 16 and be held by the sides of the groove 16 out of exact flatness, being retained due to the in...