Stacked flexible record disk storage apparatus having enhanced disk separation
US3940794A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1974 |
| Grant date | Feb 24, 1976 |
| Priority date | — |
| Expiry date | Jun 19, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A signal storage apparatus employs a stack of circular record disks accessible by axially separating segments of selected disks in the stack. One disk in a stack of coaxial rotatable circular compliant record disks is accessed with a minimum energy imparted to such disks by a chord roll disk separator. In a preferred form, the chord roll disk separator induces a primary bending mode to some of the disks being axially separated. In another aspect of the disclosure, a signal transducer is mounted integrally with the disk separator. With such mounting, primary, secondary, or higher order bending modes may be successfully employed. Full chordal and partial chordal axial disk separations are described. Arcuate and radially directed separation techniques may be employed. A unique axial stacking arrangement for compliant record disks is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.