Water well filter device and method of filtering air that enters into a water well
US6595277B2 · kind B2 · utility
7Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2002 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Jun 12, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A water well filter device and a method for preventing airborne microorganisms from entering into a water well are disclosed. The water well filter device of the present invention contains a microorganism filter element having sufficiently small pore sizes to stop microorganisms from passing through. The water well filter device can further contain a pre-filter, a vacuum relief valve, or both. The method for preventing airborne microorganisms from entering into a water well involves connecting the water well filter device of the present invention to an opening of the well that is otherwise sealed from open air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.