DE222269C - - Google Patents
Info
- Publication number
- DE222269C DE222269C DENDAT222269D DE222269DA DE222269C DE 222269 C DE222269 C DE 222269C DE NDAT222269 D DENDAT222269 D DE NDAT222269D DE 222269D A DE222269D A DE 222269DA DE 222269 C DE222269 C DE 222269C
- Authority
- DE
- Germany
- Prior art keywords
- filter
- fabric
- well
- ring
- layers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004744 fabric Substances 0.000 claims description 5
- 210000000614 Ribs Anatomy 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000004566 building material Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 241000189705 Dunedin group Species 0.000 description 1
- 208000000260 Warts Diseases 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing Effects 0.000 description 1
- 230000001627 detrimental Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 201000010153 skin papilloma Diseases 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/06—Methods or installations for obtaining or collecting drinking water or tap water from underground
- E03B3/08—Obtaining and confining water by means of wells
- E03B3/16—Component parts of wells
- E03B3/18—Well filters
- E03B3/20—Well filters of elements of special shape
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Filtering Materials (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE222269C true DE222269C (it) |
Family
ID=483178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT222269D Active DE222269C (it) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE222269C (it) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5948837A (en) * | 1996-12-19 | 1999-09-07 | Montell North America Inc. | Process for the production of flame retarding additives for polymer compositions, and products obtained from said process |
-
0
- DE DENDAT222269D patent/DE222269C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5948837A (en) * | 1996-12-19 | 1999-09-07 | Montell North America Inc. | Process for the production of flame retarding additives for polymer compositions, and products obtained from said process |
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