Disk diffuser with improved seal
US8061689B2 · kind B2 · utility
4Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 31, 2007 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Sep 23, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/70
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A flexible membrane disk diffuser having an improved arrangement for sealing the membrane to the diffuser body. An enlarged sealing bead on the circumference of the membrane fits in an annular channel on the diffuser body. A retainer ring threads onto the diffuser body to compress the sealing bead against a base surface of the channel. A discontinuity on the base surface provides an effective seal with the bead without requiring undue tightening force of the retainer ring. The discontinuity may take the form of a ridge or a rut on the base surface of the channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.