Microfilm transport with automatic threading
US4076400A · kind A · utility
2Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1976 |
| Grant date | Feb 28, 1978 |
| Priority date | — |
| Expiry date | Jul 21, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/113
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A microfilm reader has a film transport mechanism driven by separate forward and reverse motors. When the forward motor first starts, power may be applied, via a one way clutch, to a capstan in order to automatically thread the film into the reader. A film gate opens as the film approaches it and thereafter closes, after the film is captured therein. A manual override gate control may prop the film gate open, if film is manually fed through the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.