Aluminum-aluminum oxide stylus arm
US4509159A · kind A · utility
0Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1982 |
| Grant date | Apr 2, 1985 |
| Priority date | — |
| Expiry date | Dec 6, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49577
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved stylus assembly for a phonograph cartridge is provided. The assembly includes an arm having a jeweled stylus attached to one end thereof. The arm is formed of a hollow aluminum tube which has been anodized so as to form an aluminum oxide skin about the outer surface thereof. The skin extends for no more than one-half the thickness of the arm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.