Water and ground water monitoring well surge block
US5285847A · kind A · utility
5Cited by
8References
8Claims
0Family size
Inventors
Key dates
| Filing date | Sep 25, 1992 |
| Grant date | Feb 15, 1994 |
| Priority date | — |
| Expiry date | Sep 25, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/789
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention is a water well surge block for agitation of particles in water wells. The surge block utilizes a novel one way valve comprising a shaft in connection with a rigid perforated cylinder having an upper and lower surface and a flexible membrane that overlies the upper surface of the membrane. As the surge block moves downward in the well or wellbore the membrane flexes away from said cylinder during downward movement of the block in order to permit the one way flow of fluid upward. The membrane closes against the cylinder to prevent the flow of water as the block moves upward.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.