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Class Information
Number: 405/43
Name: Hydraulic and earth engineering > Drainage or irrigation > Porous or apertured pipe, flume, or tileway
Description: Method or apparatus wherein drainage or irrigation is effected by a structure having a water-conducting channel or passage formed therein and wherein the water is removed from or applied to the soil through (a) a port formed in the side wall of the channel or passage, (b) a foraminous side wall portion of the structure, or (c) the connection or joint between elements used to make up the water conducting structure.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4756643 |
Apparatus for placement of lateral drain lines onto a main drainage line for prefabricated composite drainage structures |
Jul. 12, 1988 |
| 4752402 |
Settling pond separation using permeable fabric and weighting |
Jun. 21, 1988 |
| 4745716 |
Structural water control |
May. 24, 1988 |
| 4740104 |
Underground irrigation or watering of soil |
Apr. 26, 1988 |
| 4733989 |
Self-healing bentonite sheet material composite drainage structure |
Mar. 29, 1988 |
| 4717284 |
Device for draining soils in depth |
Jan. 5, 1988 |
| 4706418 |
Roofing cant |
Nov. 17, 1987 |
| 4704047 |
Land drainage system |
Nov. 3, 1987 |
| 4697952 |
Underground irrigation apparatus and method for using same |
Oct. 6, 1987 |
| 4666334 |
Erosion control system for bluffs located adjacent a body of water |
May. 19, 1987 |
| 4650367 |
Internally reinforced extruded plastic pipe |
Mar. 17, 1987 |
| 4645377 |
Method of causing sedimentation of sedimentary solid material transported in a body of water, such as a lake, a sea, or an ocean |
Feb. 24, 1987 |
| 4639165 |
Drainage tube |
Jan. 27, 1987 |
| 4626129 |
Sub-soil drainage piping |
Dec. 2, 1986 |
| 4626130 |
Drip irrigation system |
Dec. 2, 1986 |
| 4624603 |
Underground drain pipe |
Nov. 25, 1986 |
| 4622138 |
Vertical drain |
Nov. 11, 1986 |
| 4620817 |
Underground discharge for downspouts and sump pumps |
Nov. 4, 1986 |
| 4619765 |
Filter bottom construction |
Oct. 28, 1986 |
| 4615642 |
Variable porosity irrigation pipe |
Oct. 7, 1986 |
| 4598277 |
Water detection subassemblies and method of forming same, for use in computer processing centers |
Jul. 1, 1986 |
| 4588325 |
Modular rock replacing drain field apparatus |
May. 13, 1986 |
| 4577998 |
Production of PVC irrigation pipe and the pipe so produced |
Mar. 25, 1986 |
| 4577997 |
Irrigation pipe |
Mar. 25, 1986 |
| 4560302 |
Draining ditch for draining of roadways |
Dec. 24, 1985 |
| 4538386 |
Drainage system and method |
Sep. 3, 1985 |
| 4523613 |
Multi-layered corrugated conduit with "black-eye" like apertures |
Jun. 18, 1985 |
| 4523874 |
Plastic underdrainage tube |
Jun. 18, 1985 |
| 4517316 |
Porous irrigation pipe prepared from particulate elastomer and thermoplastic binder containing controlled moisture content |
May. 14, 1985 |
| 4498807 |
Drainage channel with means for maintaining proper slope during installation |
Feb. 12, 1985 |
| 4490067 |
Modular drain system |
Dec. 25, 1984 |
| 4463529 |
Combined landscaping and foundation wall protective article |
Aug. 7, 1984 |
| 4448567 |
Method for installing lines, pipes or cables underground |
May. 15, 1984 |
| 4430020 |
Drip irrigation hose |
Feb. 7, 1984 |
| 4421810 |
Perforated drainpipe and method of making same |
Dec. 20, 1983 |
| 4402631 |
Subsurface irrigation |
Sep. 6, 1983 |
| 4391551 |
Snake cleanable fluid flow system |
Jul. 5, 1983 |
| 4389138 |
Drain pipe |
Jun. 21, 1983 |
| 4378032 |
Slotted concrete pipe |
Mar. 29, 1983 |
| 4365911 |
Surface drainage culvert |
Dec. 28, 1982 |
| 4335169 |
Slotted concrete pipe |
Jun. 15, 1982 |
| 4330222 |
Irrigation means and method |
May. 18, 1982 |
| D264116 |
Drain pipe |
Apr. 27, 1982 |
| 4322179 |
Open top drain |
Mar. 30, 1982 |
| 4318892 |
Heap leaching device |
Mar. 9, 1982 |
| 4313692 |
Septic tank drainage conduit structures |
Feb. 2, 1982 |
| 4297055 |
Method of installing underground pipe |
Oct. 27, 1981 |
| 4293237 |
Irrigation and drainage apparatus |
Oct. 6, 1981 |
| 4288174 |
System for groundwater flow control |
Sep. 8, 1981 |
| 4260284 |
Filter tube for drain purposes |
Apr. 7, 1981 |
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