Magnetic tape loading mechanism and method
US4899235A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 4, 1988 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | Feb 4, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/6653
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A tape loading mechanism for a video cassette recording apparatus in which a magnetic tape held in the cassette is withdrawn therefrom by a tape loading arm and is wound around a rotary cylinder. During this time, the cassette is fixed on the upper surface of a chassis having a cam bore, which is driven by a rotary arm in which a pin inserted in the cam bore is set up. This cam bore is provided with a first cam surface having a radius of curvature equal to that of a locus of a turning movement of the pin, a second cam surface formed continuously from the first cam surface and having a radius of curvature different from that of a locus of a turning movement of the pin, and a third cam surface formed continuously from the second cam surface and having a radius of curvature equal to that of a locus of a turning movement of the pin. Accordingly, the movement of the cassette is started at a predetermined period of time after the movement of the tape loading arm has been started, and it is completed before the movement of the tape loading arm has been completed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.