Browse Prior Art Database

Shrouded Flexible Disk Pack

IP.com Disclosure Number: IPCOM000086775D
Original Publication Date: 1976-Oct-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 69K

Publishing Venue

IBM

Related People

Talke, FE: AUTHOR

Abstract

A flexible-disk pack of the bistable type is enclosed by a perforated shroud, reducing airflow requirements substantially, whether the pack is self-ventilated or connected to a low-pressure air source. In either event, air is drawn through a hollow disk-supporting shaft and porous spacers between the disks, and discharged through the perforations in the shroud.

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 54% of the total text.

Page 1 of 2

Shrouded Flexible Disk Pack

A flexible-disk pack of the bistable type is enclosed by a perforated shroud, reducing airflow requirements substantially, whether the pack is self-ventilated or connected to a low-pressure air source. In either event, air is drawn through a hollow disk-supporting shaft and porous spacers between the disks, and discharged through the perforations in the shroud.

A plurality of identical magnetic flexible memory disks 1 are separated by porous annular spacers 2 and clamped between annular end plates 3. Assemblage 1, 2 and 3 is mounted on a hollow shaft 4. Shaft 4 has a plurality of circumferentially spaced slots 5 via which air may flow from the center of the shaft to spacers 2. Stationary hollow cylindrical shroud 6 has a plurality of perforations 7, and is supported on a rigid frame to encircle assemblage 1, 2 and 3 with slight radial clearance (e.g., 5-50 mils). The inside diameter of shaft 4, flow rate through spacers 2, radial clearance and number and size of perforations 7 are so interrelated that the rate of flow of ambient air drawn (or, if preferred, supplied from an external low-pressure air source, not shown) through the hollow shaft 4 will be, at least, equal to the flow rate through the perforations 7 to ensure that the disks 1 will normally assume the stable state in which they are shown.

A transducrr, such as magnetic head 9, is carried on an arm 10 that is moveable radially relative to a carriage 11 that, in turn, is move...