Camera with movable protective cover supported for pivoting to activate switch
US5943521A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1998 |
| Grant date | Aug 24, 1999 |
| Priority date | — |
| Expiry date | Mar 10, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera comprising a particular device (such as an electronic flash unit) that requires electrical energy to operate, a power switch capable of being changed from a normal state to a working state in order to provide electrical power to the device and biased to return to the normal state, and a protective cover (such as a lens cover) that changes the power switch from the normal state to the working state as the protective cover is moved from being closed to being open, is characterized in that the protective cover is supported for manual movement when open, without being moved to close, to change the power switch from the normal state to the working state when the power switch has returned to the normal state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.