Pluri-tubular aerator
US4911838A · kind A · utility
68Cited by
12References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1989 |
| Grant date | Mar 27, 1990 |
| Priority date | — |
| Expiry date | Feb 17, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F35/32015
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A pluri-tubular aerator includes a vertical central tube member, at least one outer tube member disposed concentrically around said central tube member, and at least one of an diffuser and an air tank disposed on an lower end of the aerator for delivering externally supplied air into the central tube member or a space between the central and outer tube members. The diffuser produces a continuous stream of fine air bubbles while the air tank intermittently produces a bulky air bubble of either a spherical shape or a ring-shape. Preferably, the diffuser and the air tank are used concurrently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.