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Browse Prior Art Database

Air Nozzle for Floppy Disk Selection

IP.com Disclosure Number: IPCOM000083234D
Original Publication Date: 1975-Apr-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Barkhuff, ED: AUTHOR [+3]

Abstract

An air nozzle described in the IBM Technical Disclosure Bulletin, Vol. 17, No. 1 June 1974, pages 329 and 330, with the partitioned construction shown here, can operate relative to a pack of floppy type disks and create separation gaps to facilitate random access.

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Air Nozzle for Floppy Disk Selection

An air nozzle described in the IBM Technical Disclosure Bulletin, Vol. 17, No. 1 June 1974, pages 329 and 330, with the partitioned construction shown here, can operate relative to a pack of floppy type disks and create separation gaps to facilitate random access.

Fig. 1 indicates the partitioned nozzle. Divider 1 forms separated orifices 2, 3 supplied with air from a common chamber. The divider thickness is greater than a disk thickness. The orifices 2, 3 are segmented for structural support and rigidity. They supply straight exit streams along the length of the divider.

Transmission of pressurized air through the common chamber produces parallel and balanced air jets at the nozzle orifices, with an intervening area of low turbulence and low pressure. When directed against and properly aligned relative to flexible disks in a pack (Fig. 2), this flow pattern creates a precise and stable peripheral separation force.

Fig. 2 indicates that the nozzle device can be associated with a gap sensor (photocell and lamp) operating relative to gaps (spaces) created by the nozzle. The device can provide either partial openings for facilitating sensor operation or complete openings for accommodating a storage transducer.

Fig. 3 indicates that when the device utilizes a divider having a thickness at least twice that of a recording disk, and a pressure lower than required for complete separation of disks, spaces can be formed on either side o...