Shutter mechanism including self-timer with shaped memory alloy control for camera
US6276847A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2000 |
| Grant date | Aug 21, 2001 |
| Priority date | — |
| Expiry date | Jan 6, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B9/64
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A shutter mechanism comprising a shutter that is operated to allow the passage of light, and a self-timer with a shaped memory alloy control that can be deformed and that when subjected to electrical current heats to recover from being deformed and after some delay during recovery initiates operation of the shutter, is characterized in that a manually set timer member is connected to the shaped memory alloy control and is supported to be manually moved to deform the shaped memory alloy control to set the self-timer and for the shaped memory alloy control to reverse-move the timer member during recovery of the shaped memory alloy control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.