Tubular diffuser with adjustable plug
US5059358A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1990 |
| Grant date | Oct 22, 1991 |
| Priority date | — |
| Expiry date | Jun 4, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F23/231265
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A tubular membrane diffuser for a wastewater aeration system. The diffuser includes a pipe having spaced apart outlet ports and a porous membrane sleeved around the pipe for discharging air in bubbles. An adjustable plug can be located at the outboard end of the diffuser pipe in a fully buoyant application, near the inboard end of the diffuser pipe in a non-buoyant application where water occupies the outboard half of the diffuser, or anywhere between the diffuser pipe ends in a partially buoyant application. The plug includes a ring with a tapered bore and a tapered plug that threads into the bore to radially expand the ring for securing it in place.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.