Mode changing mechanism for pre-winding type photographic camera
US4586801A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 1984 |
| Grant date | May 6, 1986 |
| Priority date | — |
| Expiry date | Oct 9, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/425
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A pre-winding type photographic camera is provided with a mode changing mechanism for changing its operational mode between a pre-winding mode in which film is drawn out from a film magazine loaded in the camera and is taken up around the spool of the camera prior to photographing, and photographing mode in which the film is rewound into the film magazine by one frame each time the film is exposed. The mode changing mechanism is arranged to set the operational mode to the pre-winding mode by, in response to the opening of the backlid of the camera, bringing a mode changing member to a pre-winding mode position, and at the same time causing a force to be charged for bringing the mode changing member to a photographing mode position, and by retaining the mode changing member in the pre-winding mode position in response to the opening of the backlid of the camera, and is arranged to change the operational mode to the photographing mode by releasing the mode changing member in response to completion of the pre-winding mode operation, thereby permitting the mode changing member to move to the photographing mode position under the charged force. The mode changing mechanism is further pro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.