One-time use camera loading method
US6226457A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1999 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Jul 26, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B19/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a method for loading a film cartridge in a one-time use camera, the film cartridge is placed in a film cartridge chamber of a camera frame assembly. An anti-backup subsystem is mounted on the camera frame assembly. The anti-backup subsystem has a first mechanical member biased into a disengaged position. A main portion of the filmstrip is then wound, in a prewind direction, from the film cartridge to a film supply chamber of the camera frame assembly. Following the winding, the first mechanical member is biased into an engaged position, in which the anti-backup system precludes winding of the filmstrip in the prewind direction. The first mechanical member can be biased by applying a label to a casing of the camera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.