Electric arm lifting and turntable's auto-stop assembly of record player
US9997175B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2017 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Sep 15, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B3/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electric arm lifting and turntable's auto-stop assembly of a record player is revealed. A record player is disposed with a power-driven turntable, a rotatable and movable arm disposed on one side of the turntable, a lift mechanism used for pushing against and moving the arm upward, and a sensor. The arm is moveable over the turntable. The sensor is arranged at an arm rotating shaft of the arm and used for sending a signal while detecting that the arm is moved to a lift point over the turntable. The lift mechanism is activated to move the arm upward and the turntable is stopped simultaneously for protecting a needle on the arm while the sensor detects that the arm has been moved from the turntable to the lift point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.