Film feeding system of a camera
USRE33436E · kind E · reissue
0Cited by
11References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1988 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | Jun 8, 2008 |
Classification
- Technology area (CPC —)General
Abstract
A film advancing system of a camera in which a roll of film inside a film cartridge is first wound to a spool and then the film is rewound into the cartridge one frame from another after each photographic operation is provided. The system includes a reversibly rotatable motor the drivement and rotational direction of which are automatically controlled depending upon various conditions of the camera to implement required advancement of the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.