Air bearing straight line tracking phonograph tonearm
US4628500A · kind A · utility
6Cited by
4References
6Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | May 30, 1985 |
| Grant date | Dec 9, 1986 |
| Priority date | — |
| Expiry date | May 30, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B3/38
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An air bearing straight line tracking phonograph tonearm combines the features of a readily removable decoupled counterweight arm which bears horizontally and vertically adjustable counterweights; a readily removable tonearm tube with tapered wall thickness having an integral headshell, cartridge and stylus; various simple means for vertical and leveling adjustments; and a vertical tracking angle or stylus rake angle control that automatically retains perfect tracking tangency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.