Stylus grinding device for video disc player
US3973361A · kind A · utility
0Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1975 |
| Grant date | Aug 10, 1976 |
| Priority date | — |
| Expiry date | Jul 11, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y15/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A stylus grinding device for use in a video disc player comprises a rotary grinding disc adapted to be rotated at its center during a grinding operation subject to the pickup stylus. The stylus grinding device is designed such that the amount of the pickup stylus to be ground varies depending upon the duration of actual service performed by the pickup stylus to reproduce video information recorded on a flexible foil-type disc record.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.