Mode changing apparatus for a tape recorder
US4568989A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 1982 |
| Grant date | Feb 4, 1986 |
| Priority date | — |
| Expiry date | Oct 12, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A mode changing apparatus for a tape recorder comprises a rotatable changing gear having a toothed periphery with a toothless gap therein, a magnet rotatably coupled with the changing gear for rotation therewith, a driving gear rotatably mounted for engagement with the toothed periphery of the changing gear, a yoke assembly including a portion cooperating with the magnet for providing a stabilizing effect by which the changing gear is held in an initial position with the toothless gap facing the driving gear, a solenoid coil wound on another portion of the yoke assembly and being operative, when energized, to generate a magnetic force by which the magnet and changing gear are angularly displaced from the initial position for engagement of the toothed periphery by the driving gear to cause turning of the changing gear, an operating member, such as a head base plate of the tape recorder, movable from an inactive position to an active position for establishing a respective mode of the tape recorder and being yieldably urged to return to its inactive position, an actuating assembly, desirably in the form of a cam rotatable with the changing gear and an actuating lever engageable with t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.