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| Number | Title | Issue Date |
| 7413382 | Coupler for leaching chamber systems An adjustable coupler is disclosed for interconnecting leaching chambers to create a serpentine pathway for a leaching field. A coupler can connect a first leaching chamber and a second leaching chamber. The coupler can comprise a mating feature and an adjustment fe... | 08/19/2008 |
| 7380374 | Curtain drain A device for preventing water seepage over a foundation wall of a building, such device having first and second L-shaped members disposed facing each other with the base of one resting on the base of the other with a conduit resting on the upper base for the receipt... | 06/03/2008 |
| 7364384 | Anti-rotation stop for chamber A thermoplastic chamber for leaching wastewater or other use, which is designed so that when jointed to a like chamber the horizontal plane angle between the chambers can be adjusted, has one or more stops which can be selectively used to prevent rotation, for insta... | 04/29/2008 |
| 7351005 | Leaching system A leaching device having slots to frictionally engage soil to permit the introduction of water through the slots and into the soil while prohibiting the excessive passage of soil particles through the slots. A method of introducing water into soil by passing water t... | 04/01/2008 |
| 7337983 | Irrigation method and system using variable orifices The present invention is an irrigation method and system for providing a user-defined flow rate to a field using variable sized orifices. The irrigation method and system includes providing a source of irrigation water. A first discrete area to be irrigated is defin... | 03/04/2008 |
| 7311467 | Ergonomic size leaching chamber A leaching chamber, particularly a chamber which lacks ribs and is therefore flexible along its length, has a length in the range 4 to 5 ft, a length to width aspect ratio of between 1.2 and 1.6 and a weight of less than 3 pounds per foot, preferably about 12 pounds... | 12/25/2007 |
| 7273330 | Invert elevation-change adapter An adapter is used with a leaching chamber or like article to change the invert elevation for a pipe which carries water to the article. The first end of the adapter fits a hole or other port on the article. The body of the adapter rotates about that first end, chan... | 09/25/2007 |
| 7048010 | Drip irrigation system Low-pressure drip irrigation system, comprising a distribution pipe made of thin-walled sleeve collapsible when empty and designed to operate under hydraulic head up to 3 m H2O, having a plurality of holes in the walls thereof, a plurality of branch tubes... | 05/23/2006 |
| 7040839 | Subsurface irrigation of plants, trees and landscape with water containing gas micro-bubbles In the subsurface irrigation of crops, using injectors to provide micro-bubbles of useful gases of improvement of delivery of a more uniform stream with lesser variation in gas content and lesser tendency of particulate fines to settle out, thereby reducing the need... | 05/09/2006 |
| 7022235 | Wastewater biological treatment system and method therefor A biological treatment system, including a wastewater system drain field and at least one perforated distribution pipe located within the drain field and adapted to receive effluent. At least one perforated outer pipe surrounds the at least one distribution pipe to ... | 04/04/2006 |
| 7018134 | Foundation and soil irrigation system utilizing wicking materials The present invention provides a method and apparatus for a foundation and soil irrigation system having multiple independent zones that can be controlled to deliver fluid to surrounding soil. The system can be installed above or below ground, but in a preferred emb... | 03/28/2006 |
| 6890126 | Subsurface water/air irrigation system with prevention of air lock An underground irrigation system which supplies beneath the surface of the soil under or near the roots of a growing crop, water infused with micro bubbles of gas (usually air). A mixer/injector injects and mixes gas into water to form a mixed stream that flows from... | 05/10/2005 |
| 6739800 | Self-flushing gutter pipe A cleaning device for use with a gutter system includes at least a first body portion connected to the top of the gutter pipe. The cleaning device includes a downspout, connected to the gutter, with a flexible segment. The flexible segment can be extended or compres... | 05/25/2004 |
| 6712552 | Geosynthetic material irrigation system The present invention is an economical and easily installed irrigation system for agricultural products covering large areas. The invention comprises top and bottom layers of geosynthetic material having a non-cohesive, porous material between the layers. A water di... | 03/30/2004 |
| 6467995 | Self-flushing pipe A drainage pipe for use in a waterproofing system includes a plurality of openings. The drainage pipe includes a cleaning tube affixed to an interior surface of the drainage pipe. The tube has a plurality of spaced holes which allow fluid such as air or w... | 10/22/2002 |
| 6464865 | Wastewater dispersal system The present invention is a compact water dispersal system located on an outdoor ground site. The system includes a water treatment system resulting in treated water with an organic loading of less than about 20 ppm and a suspended solids concentration of ... | 10/15/2002 |
| 6375388 | Affluent distribution system capable of being horizontally offset or curved An effluent distribution system for distributing effluent from a source of waste water, wherein the system includes a chamber, a cover or lid for the chamber, an effluent flow system, a pair of curved end sections secured at one end of the chamber for adj... | 04/23/2002 |
| 6076992 | Underdrain pipe An underdrain pipe has a pipe wall in which wall portions rectangular in section and wall portions circular in section are disposed alternately in a longitudinal direction of the pipe, in which a number of water collecting small holes are formed in portio... | 06/20/2000 |
| 5897777 | Waste water treatment system Disclosed is a waste water treatment system which includes a water impervious container, a uniform effluent distribution system for distributing effluent in a uniform manner throughout the container, material fill which is placed within the container, an ... | 04/27/1999 |
| 5784838 | Drain for draining water from a basement floor A basement wall drain unit that extends around the periphery of a basement next to the wall for draining away any potentially damaging moisture. The drain fits securely to a foundation wall before a concrete floor is poured in a basement. The drain furthe... | 07/28/1998 |
| 5360556 | Method of feeding wastewater effluent to filter bed through parallel conduits An on-site wastewater treatment system distributes septic tank effluent over a particulate media filter bed through a distribution manifold at a sufficient volumetric flow rate relative to the cross-sectional area of the distribution conduits to inhibit u... | 11/01/1994 |
| 5297895 | Method and apparatus for controlling silt erosion An apparatus for use in conjunction with a silt collecting pond to prevent silt from being washed from adjacent land by rainwater comprises a base adapted to rest on the bottom of the pond and a cylindrical cage defining an upwardly open interior volume e... | 03/29/1994 |
| 5249885 | Method or use of composite drywell A composite drywell, a drywell system and method employing the composite drywell, which composite drywell comprises a cylindrical drywell having a removable top and bottom section, the drywell composed of a plurality of separate, edge-interlocked, arcuate... | 10/05/1993 |
| 5102259 | Sub-surface irrigation systems A sub-surface irrigation system includes a conduit connected to a water supply. A plurality of fluid dispenser units are connected to a conduit or conduits. Each of the fluid dispenser units includes a connector interconnected at one end to the interior o... | 04/07/1992 |
| 5024555 | Sub-surface irrigation system A sub-surface irrigation system includes a conduit connected to a water supply. A plurality of fluid dispenser units are connected to the conduits. Each of the fluid dispenser units include a connector interconnected at one end to the interior of the cond... | 06/18/1991 |
| 4948295 | Pipe for watering plants Pipe for watering plants, having an inner feed pipe (1) provided with orifices (5) and of substantially circular cross-section, on the outside surface of which there are one or a plurality of layers of fibrous material (2a, 2b). The feed pipe (1) and the ... | 08/14/1990 |
| 4930936 | Partial-seepage drainage pipe with mating sleeve A partial-seepage drainage pipe includes a wall surface of circular profile which is corrugated over the majority of the pipe circumference. Adjoining the circular wall surface is a base having a bottom surface and side wall segments. The pipe has a matin... | 06/05/1990 |
| 4928427 | Irrigation system A hollow, cellulose acetate fiber having a wall permeable to water is formed into a coil of constant dimensions. The coil is placed at the root level of the plants to be irrigated. Where the plants are spaced at intervals (as opposed to being immediately ... | 05/29/1990 |
| 4890640 | Drainage valve A drainage valve for use in pressure systems where pressure surges occur for draining an underground water system when the water pressure in the underground water system is off and for sealing the drainage valve against drainage when the water pressure is... | 01/02/1990 |
| 4626130 | Drip irrigation system An elongated water distributing hose capable of effectively watering large areas with readily available water pressures and in a matter whereby an essential uniform watering is achieved. This desired uniform watering results notwithstanding sloping ground... | 12/02/1986 |
| 4572706 | Desalting irrigation and its apparatus A salt damage preventive irrigation method and its apparatus. In this irrigation method, the poisonous salt contained in irrigation water can be concentrated near the emitting opening of an emitter and the moistened area can be prepared in the soil with w... | 02/25/1986 |
| 4321948 | Discharge system for septic tank A discharge system for a septic tank is disclosed which has a dump valve means at the outlet thereof for controlling the discharge of effluent. Leading from the dump valve is a central pipe that then has a plurality of smaller pipes interconnected therewi... | 03/30/1982 |
| 4257191 | Moisture reservoir for fertile soils for plants A granular or plate-like calcium aluminum silicate layer stores water beneath fertile soil. The silicate material may be coated with fertilizer or chemicals and may be shipped and installed within a wrapping, at least one surface of which is moisture perv... | 03/24/1981 |
| 3946762 | Underground irrigation system An irrigation or drainage system is provided comprising one or more conduits having radially positioned spaced apertures in the walls thereof, the system being otherwise closed except for an inlet/outlet aperture. The exterior of the conduits is covered b... | 03/30/1976 |
