Automatic mode-change mechanism for tape recorder
US4604662A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1984 |
| Grant date | Aug 5, 1986 |
| Priority date | — |
| Expiry date | Jul 19, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/29
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A mechanism for use in a cassette tape recorder automatically changes the mode of the recorder when the end of the tape is reached by sensing the cessation of rotation of the pinch roller. A mode change lever having an elongated hole with converging sides that receives a cylindrical portion of the pinch roller is biased by a spring so that the cylindrical portion engages the converging sides and the mode-change lever tends to rotate in a first direction. Once the pinch roller ceases to rotate, the mode-change lever is moved in a direction opposite the first direction and so that it cooperates with a mode-change drive assembly rotated by the capstan. The mode-change lever is then displaced and releases a mode key, so that the mode of the recorder is changed and is typically shut off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.