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Flutter Stabilizing Fins for a Flexible Disk Pack

IP.com Disclosure Number: IPCOM000082683D
Original Publication Date: 1975-Jan-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

King, FK: AUTHOR

Abstract

One or more fins 8 are disposed around the peripheries of coaxially disposed stacks 10 and 12 of flexible magnetic disks 14, for the purpose of reducing the flutter of the disks 14 at their edges, thus allowing an accurate and easy entrance of an arm 16 carrying a magnetic transducer 18 between selected pairs of the disks 14.

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Flutter Stabilizing Fins for a Flexible Disk Pack

One or more fins 8 are disposed around the peripheries of coaxially disposed stacks 10 and 12 of flexible magnetic disks 14, for the purpose of reducing the flutter of the disks 14 at their edges, thus allowing an accurate and easy entrance of an arm 16 carrying a magnetic transducer 18 between selected pairs of the disks 14.

The disks 14 of stack 12 are fixed to a shaft 20 to rotate with the shaft and have spacers 22 between consecutive disks. Arm 16 is moveable in direction A toward and away from shaft 20, so that arm 16 may enter the stacks 10 and 12 between pairs of the disks 14.

Fins 8 extend parallel with shaft 2O and are disposed approximately on a radius from the center of shaft 20, viewing fins 8 in plan. Each of fins 8 has a thickness t, a width w and is mounted stiffly at a distance d from the edges of disks 14 around the peripheries of stacks 10 and 12. For easy removal of stack 10 from shaft 2O, each of fins 8 can be pivotally mounted at 24 with respect to a stationary frame 26. A stop 28 may be located above stack 12 for the purpose of holding each fin 8 spaced at the distance d from the edges of the disks 14, for the complete height of the stacks 10 and 12.

The disk stack 10 is adapted to be temporarily attached to the upper end of shaft 20, and may be easily replaced by a similar disk stack 10 with different information on the disks 14 of the new stack 10. The disks 14 of stack 10 are disposed on a...