Dustproof door mechanism
US4835636A · kind A · utility
8Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1987 |
| Grant date | May 30, 1989 |
| Priority date | — |
| Expiry date | Aug 7, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A dustproof door mechanism includes a dustproof door pivotably supported by a shaft and normally biased by a spring to its closed position, a door opening cam integrally formed with a loading gear rotatable in opposite directions to drive a cassette loading mechanism, and a door opening link engaging the dustproof door and pivoted by the door opening cam in a direction for opening the door.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.