Photographic camera having automatic reset of an operation upon unloading of a film cartridge
US5899593A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1997 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Oct 24, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2217/268
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera for use with a film cartridge which camera automatically resets a camera operation upon unloading of the film cartridge, the camera includes a camera body for forming a protective enclosure. A retainer is disposed in the camera body that moves to a passive first position upon loading of the film cartridge for permitting the film cartridge to be loaded in the camera body, and that moves to a second active position for engaging the film cartridge upon unloading of the film cartridge that permits partial unloading and prevent full unloading. A logic element is received by the camera body and includes a first state that activates the camera operation and a second state that resets the camera operation. An activation operator is manually engaged for moving the logic element to the activation position, and that either engages or disengages the retainer upon unloading of the film cartridge, which engagement or disengagement consequently causes the operator to move the logic element to the reset position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.