Tangential pick-up device for a gramophone turn-table
US4149730A · kind A · utility
2Cited by
6References
2Claims
0Family size
Inventors
Key dates
| Filing date | Apr 19, 1977 |
| Grant date | Apr 17, 1979 |
| Priority date | — |
| Expiry date | Apr 19, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B3/08532
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A tangential pick-up device for a gramophone turn-table comprises a pick-up head on a support connected by a floating articulation to a carriage which is driven along a radially-disposed arm by a servo-control device to hold the support in a reference position. The floating articulation of the support, e.g. by flexible suspension wires, is arranged so that shocks or vibrations tend to cause pivoting of the support about two axes disposed radial and perpendicular to a disc and intersecting adjacent the pick-up needle, whereby jumping of the needle is avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.