Phonograph turntable and mat assembly
US3984112A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1974 |
| Grant date | Oct 5, 1976 |
| Priority date | — |
| Expiry date | Dec 18, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/2018
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A record player turntable has a substantially flat circular metallic top and an integral substantially cylindrical downwardly extending metallic flange and a resilient mat having a circular top portion covering the aforesaid circular metal top portion and having an integral downwardly extending resilient flange gripping the said metallic flange. The connection between the horizontal metal turntable top and its connected vertically extending flange consists of an integral diagonal web of the metallic flange flared downwardly and outwardly. This web has grooves providing for a lodgment and gripping action on the part of the circular downwardly extending rim of the inverted pan-shaped plastic mat that covers the turntable top and it also forms part of the exposed substantially cylindrical lateral face of the turntable. A horizontally outwardly facing annular groove is formed in the aforesaid web adjacent its upper end, and an annular vertically upwardly facing groove providing a substantially square annular shoulder or bead remaining between said annular grooves is also formed in the web. The upper lip of the horizontal outwardly facing groove is preferably tapered externally downward…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.