Seamless pressure responsive diaphragm installation
US4721040A · kind A · utility
12Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 11, 1986 |
| Grant date | Jan 26, 1988 |
| Priority date | — |
| Expiry date | Aug 11, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S493/902
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A flanged, dish shaped rectangular pressure responsive diaphragm is made from non-stretchable flat sheet stock in which the corners are formed with a tapering loop of excess material, and pleat folds take up the excess flange material to allow a tab portion to lie flat across the corner. Spacer strips and pieces are added to provide a uniform flange thickness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.