Film take-up spool for camera
US4980712A · kind A · utility
2Cited by
3References
88Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 27, 1990 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Mar 27, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2217/261
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A film take-up spool for a camera has a flange for film guide, wherein the flange is provided with guide means of a shape that upon riding of the film on the flange it directs the riding film away from the riding state as the spool rotates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.