Record storage apparatus

US4262316A · kind A · utility

Assignee

• IBM Corporation · US

Inventors

• Kurt Hartmann · Duisburg, DE
• Horst D. Matthaei · Waldenbuch, DE

Key dates

• Filing date: Jul 30, 1979
• Grant date: Apr 14, 1981
• Expiry date: Jul 30, 1999

Classification

• Technology area (CPC G): Physics
• CPC primary: G11B17/021
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

For producing a transducer access opening in a stack of rotating flexible magnetic record disks, a co-rotating part axially deflects the peripheral edges of selected disks for partially axially separating same. The co-rotating part may take the form of a thin disk, several thin disks, or shaped as a roll. The axis of the roll is obliquely inclined against the disk pack rotational axis. The roll has a resilient surface such that, after the roll has been inserted into the disk pack, the flexible disks move up the outer surface of the roll to be deflected.