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Foil Splitter for Flexible Disk Pack

IP.com Disclosure Number: IPCOM000089522D
Original Publication Date: 1977-Nov-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Seifert, HG: AUTHOR

Abstract

A pack of rotating closely spaced floppy storage disks 1 is opened by splitter 3 for access of transducer 2. Knife-shaped splitter 3 is adapted to the natural deformation encountered in self-ventilated packs. This ensures a stable air flow and prevents abrasion by disk edges. During access, only a small number of the disks of the pack are deflected, so that splitting is independent of the position accessed along the pack.

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Foil Splitter for Flexible Disk Pack

A pack of rotating closely spaced floppy storage disks 1 is opened by splitter 3 for access of transducer 2. Knife-shaped splitter 3 is adapted to the natural deformation encountered in self-ventilated packs. This ensures a stable air flow and prevents abrasion by disk edges. During access, only a small number of the disks of the pack are deflected, so that splitting is independent of the position accessed along the pack.

With disks 1 rotating in the direction of arrow 4, splitter 3, as shown in Figs. 1 and 2, has a sharp front edge 5 and almost parallel faces towards its rear edges 6 (Fig. 2A). Splitter 3 is symmetrical with respect to plane B-B in Fig. 2B. Surface 7 between front edge 5 and rear edges 6 is shaped almost elliptically, serving as an air bearing between splitter 3 and disk 1. Viewing in the direction of arrow 8 (Fig. 2), splitter 3 is tapered between positions 9 and 10 and has a tapered tip part 11. Transducer 2 is positioned at a point of full width between the tapered parts.

Splitter 3 can be a die cast or composite metal structure to which transducer 2 is attached.

As shown in Fig. 2, pipe 12, terminating in a long narrow slot, can be provided. Air flowing through pipe 12 and discharging in the direction of arrow 13 at an angle of about 60 to 70 Degree to the radial axis 14 opens the disks revolving in the direction of arrow 4.

If this air stream is used to initially open the pack for inserting splitter 3, t...