Aerator containing a ballast charge
US4118447A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 20, 1977 |
| Grant date | Oct 3, 1978 |
| Priority date | — |
| Expiry date | Jun 20, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides novel apparatus for aerating a body of liquid. The apparatus includes a diffuser shell in the form of a substantially tubular, elongate body of a relatively rigid, gas permeable material such as fine pore polyethylene. The diffuser is closed at one end by a first end cap and at the other end by a combination second end cap and gas inlet assembly. The latter is adapted for connection to a source of pressurized gas. Disposed within the hollow interior of the diffuser shell is an elongate housing for containing a suitable ballast. The diffuser shell and ballast housing are dimensioned so that there is an interspace between the external periphery of the ballast housing and the inside of the diffuser shell. The ballast housing is supported at one end by the first end cap, and at the other end by the second end cap and inlet assembly so as to maintain the interspace between the ballast housing and the diffuser shell. Conduit means are used to connect a source of pressurized gas to the inlet assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.