Playback stylus for phonograph record stamper
US4113266A · kind A · utility
10Cited by
4References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 25, 1977 |
| Grant date | Sep 12, 1978 |
| Priority date | — |
| Expiry date | Apr 25, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B3/46
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A playback stylus for a phonograph record stamper and matrix is provided. The stylus comprises a pair of substantially cylindrical jeweled members each terminating at a tipped end. The members each have a flat surface defining a plane parallel to its longitudinal axis. The members are bonded to each other along the flat surfaces with the tip ends aligned to form a "V." The ends of the members opposite the tip ends are bonded to a tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.