Blade for focal plane shutter
US4401380A · kind A · utility
9Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1982 |
| Grant date | Aug 30, 1983 |
| Priority date | — |
| Expiry date | Feb 9, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B9/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A shutter blade for focal plane shutter, in which the blade thickness is made the thinnest possible by forming a plurality of recesses throughout the whole area, except for the connecting part of the blade with a drive mechanism and the outer peripheral edge of the blade. The recesses are in the regular polygonal shape such as hexagon, square, triangle, and so forth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.