FR2329326A1 - Filtration of particles from water entering tubular drain - by surrounding drain with circular sleeve of knitted synthetic cloth - Google Patents
Filtration of particles from water entering tubular drain - by surrounding drain with circular sleeve of knitted synthetic clothInfo
- Publication number
- FR2329326A1 FR2329326A1 FR7620384A FR7620384A FR2329326A1 FR 2329326 A1 FR2329326 A1 FR 2329326A1 FR 7620384 A FR7620384 A FR 7620384A FR 7620384 A FR7620384 A FR 7620384A FR 2329326 A1 FR2329326 A1 FR 2329326A1
- Authority
- FR
- France
- Prior art keywords
- cloth
- sleeve
- particles
- drain
- knitted
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B11/00—Drainage of soil, e.g. for agricultural purposes
- E02B11/005—Drainage conduits
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
Soil particles >100 mu are filtered from water entering a tubular drain by a sleeve of knitted cloth. The tubular drain is flexible and is undulating with peaks alternating with hollows in the longitudinal direction, the hollows having holes for the water to pass through. A sleeve made of a cloth of extensible, creped synthetic threads covers the tube. The sleeve is knitted with a dia. smaller than that of the tube so that when it is pulled over the tube it stretches to form undulations corresp. to the hollows in the tube and is continually under tension. The sleeve is knitted using a stitch that makes the cloth ladderproof and prevents it becoming unknitted. Sleeves of knitted cloth are made in lengths of >=50 m. to fit over drains of the same length. Particles >=100 mu, in size are filtered out by the cloth sleeve, but those of =25 mu pass through into the tubular drain. Used for filtering fine silts and soil particles from water entering field drains. Filter prevents the tubular drains from becoming clogged with large soil particles but allows smaller particles through.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US62663075A | 1975-10-29 | 1975-10-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2329326A1 true FR2329326A1 (en) | 1977-05-27 |
| FR2329326B3 FR2329326B3 (en) | 1979-03-30 |
Family
ID=24511184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7620384A Granted FR2329326A1 (en) | 1975-10-29 | 1976-07-02 | Filtration of particles from water entering tubular drain - by surrounding drain with circular sleeve of knitted synthetic cloth |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE844419A (en) |
| DE (2) | DE7621000U1 (en) |
| FR (1) | FR2329326A1 (en) |
| NL (1) | NL7607436A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9211973U1 (en) * | 1992-09-05 | 1992-12-24 | Brosi, Harald, Dipl.-Ing. (FH), 8898 Schrobenhausen | Reinforcement cage for the creation of deep drainage systems (drainage) |
| DE102021102651A1 (en) | 2021-02-04 | 2022-08-04 | Aco Ahlmann Se & Co. Kg | Surface drainage system and method of making such |
-
1976
- 1976-07-02 DE DE19767621000 patent/DE7621000U1/en not_active Expired
- 1976-07-02 FR FR7620384A patent/FR2329326A1/en active Granted
- 1976-07-02 DE DE19762629857 patent/DE2629857A1/en active Pending
- 1976-07-06 NL NL7607436A patent/NL7607436A/en unknown
- 1976-07-22 BE BE169157A patent/BE844419A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| BE844419A (en) | 1976-11-16 |
| DE7621000U1 (en) | 1977-10-13 |
| NL7607436A (en) | 1977-05-03 |
| DE2629857A1 (en) | 1977-05-12 |
| FR2329326B3 (en) | 1979-03-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |