Method for the grit-free withdrawal of water from a well and also a device suitable therefor
US4779682A · kind A · utility
9Cited by
3References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 9, 1987 |
| Grant date | Oct 25, 1988 |
| Priority date | — |
| Expiry date | Feb 9, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a well with filter tube and filter gravel fill a slot profile for a collection element forming the suction tube has larger suction cut-outs at the bottom than at the top and effects an equalization of the flow velocity of the water passing into the filter gravel layer on the basis of the combination of calculations and empirical investigations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.