Operating mode change-over apparatus in tape recording and/or reproducing apparatus
US4360846A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1979 |
| Grant date | Nov 23, 1982 |
| Priority date | — |
| Expiry date | Dec 19, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/442
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An operating mode change-over apparatus in a tape recorder includes: a plunger-solenoid having a stationary iron core and a movable iron core movable from a first position in contact with, and a second position spaced from, the stationary iron core; an electric motor; a pinion driven by the electric motor; a rack engageable with and disengageable from the pinion; an operating mode change-over member driven by the rack; a locking lever driven by the movable iron core and holding the engaged condition of the rack and pinion; and a spring for pressing the movable iron core to the stationary iron core, wherein, while the movable iron core is pressed to the stationary iron core, the plunger-solenoid is energized, and the electric motor is driven.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.