Record player
US10381026B2 · kind B2 · utility
0Cited by
4References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 9, 2018 |
| Grant date | Aug 13, 2019 |
| Priority date | — |
| Expiry date | Jul 9, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B3/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A record player includes a turntable, a drive motor, a non-contact transmission mechanism, a tone arm, and a housing. The non-contact transmission mechanism includes a drive-side rotor and a magnetic member. The drive-side rotor is rotated by a driving force of the drive motor. The drive-side rotor is formed of a permanent magnet. The magnetic member is constituted of a soft magnetic body. The turntable is rotated according to the rotation of the drive-side rotor by an attraction force acting on the magnetic member from the permanent magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.