Disc positioning device
US4497003A · kind A · utility
19Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1982 |
| Grant date | Jan 29, 1985 |
| Priority date | — |
| Expiry date | Jun 8, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/0282
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disc positioning device for positioning a disc having a center opening with respect to a spindle for driving the disc for rotation by bringing the center axes thereof into alignment with each other. An adapter in the form of a hemispherical body of a diameter greater than that of the center opening of the disc is mounted on the spindle in such a manner that the center of a spherical body from which the hemispherical body of the adapter is severed coincides with the center axis of the spindle at all times. The adapter is urged by a spring to be biased with the center thereof serving as the center of rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.