Motor-driven film winder for cameras
US4653885A · kind A · utility
Inventors
Key dates
| Filing date | Sep 18, 1985 |
| Grant date | Mar 31, 1987 |
| Priority date | — |
| Expiry date | Sep 18, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/425
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A motor-driven film winder for use with a camera having a film winding mechanism has a motor, a first system for transmitting rotative power from the motor to the film winding mechanism, a second system for transmitting rotative power from the motor to a mounting screw for threaded engagement in a tripod screw hole of the camera, and a switching control assembly for selectively operating the first or second system. The second system includes first and second selector gears angularly movable about the axis of a main gear and rotatable about their own axes in opposite directions. One of the first and second selector gears is selectively coupled, at a time, to the mounting screw by the switching control assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.