Record disc, turntable and method for fixing same
US4532622A · kind A · utility
17Cited by
6References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1983 |
| Grant date | Jul 30, 1985 |
| Priority date | — |
| Expiry date | Oct 31, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A record disc (10), and method for fixing same to a turntable (24). The record disc has a central opening (18) with a pair of arms (21) forming an interlock (20) and a pair of detents (22) formed integrally on a raised lip (23) extending outwardly from the lower surface of the record disc and surrounding the opening. The opening is placed over the central shaft (26) of the turntable and the record disc is secured to the turntable by the action of the interlock coacting with slots (28) formed at the base of the central shaft and the detents (22) held within a pair of openings (33) formed within a depression (30).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.