Film drawing device and a drawing plate for use in the film drawing device
US6149321A · kind A · utility
2Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1998 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Oct 2, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03D13/005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A drawing plate for a film end drawing device is provided which is inserted through a film entrance of a patrone into the patrone. The drawing plate is used in drawing one end portion of a film wound in the patrone from the film entrance. The drawing plate is provided, on its surface to be overlaid with the film, with a friction material having a large coefficient of friction such that the one end portion of the film in the patrone can be drawn out from the film entrance by means of frictional resistance of the friction material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.