Shutter and flash synchronization assemblage
US5721985A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 13, 1997 |
| Grant date | Feb 24, 1998 |
| Priority date | — |
| Expiry date | Mar 13, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2219/045
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A shutter and flash synchronization assemblage comprising a flash circuit board having a shutter-flash synchronization contact, an electrically conductive shutter blade supported for movement between a lens covering position spaced from the synchronization contact and a lens uncovering position in abutment with the synchronization contact to establish a temporary conductive connection between the flash circuit board and the shutter blade, and an electrically conductive return spring interconnecting the flash circuit board and the shutter blade to establish a permanent conductive connection between the flash circuit board and the shutter blade and to urge the shutter blade to its lens covering position, is characterized in that the return spring is a non-conductive substance which is elastic to urge the shutter blade to its lens covering position and which is provided with a plurality of electrically conductive cross-woven strands to establish the permanent conductive connection between the flash circuit board and the shutter blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.