Camera door interlock mechanism
US5873008A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1997 |
| Grant date | Feb 16, 1999 |
| Priority date | — |
| Expiry date | Oct 29, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2217/268
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera film-loading door interlock mechanism includes a film-loading door movable between a closed position and an open position to provide access to a film compartment in the camera. A door latch has an active state retaining the film-loading door in its closed position and an inactive state permitting movement of the film-loading door to its open position. A door un-latching mechanism is movable along a predetermined path to set the door latch in its inactive state, and a locking lever is selectively movable into the path of the door un-latching mechanism to prevent the door un-latching mechanism from setting the door latch in its inactive state. A bi-stable structure selectively moves the locking lever into the path of the door un-latching mechanism. The door un-latching mechanism includes a slide lever, slidably movable along the predetermined path to set the door latch in its inactive state, and a slide lever stop movable with the slide lever. The locking lever is selectively movable into the path of the slide lever stop. The bi-stable structure includes a rotatable cam and an electromagnetic member for selectively rotating the cam to a position causing the locking lever to …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.