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| Number | Title | Issue Date |
| 6997649 | Underwater riprap foundation and consolidation smoothing method therefor An underwater riprap foundation which can be constructed efficiently using a reduced amount of ripraps and a consolidation smoothing method for efficient construction of the same are disclosed. The underwater riprap foundation includes a first region for supporting ... | 02/14/2006 |
| 6979705 | Water based coal tar emulsions Water-based coal tar emulsions are described which are prepared from a blend comprising coal tar, water, acrylonitrile-butadiene copolymer powders and clay. After the emulsion is prepared from the blend, a rubber latex may be added to the emulsion. Films obtained fr... | 12/27/2005 |
| 6691472 | Foundation wall protector A foundation protector for a foundation wall prevents moisture being retained in the foundation wall and also provides drainage for surface water so that water does not rest against the surface of the foundation wall. The foundation protector has a smooth... | 02/17/2004 |
| 6053662 | Panel assembly for RCC dam and construction method A panel assembly to be used in an RCC dam structure, or the like, includes a precast concrete panel, a geomembrane liner extending over the full face of the panel and a geotextile sheet backing on the liner directly attached to the panel. The liner seals ... | 04/25/2000 |
| 5720576 | Underwater construction of impermeable protective sheathings for hydraulic structures A system for constructing underwater impermeable protective sheathings of hydraulic structures or parts of them. At least one reference line is provided on the surface area to be protected and a protective sheathing is constructed underwater by positionin... | 02/24/1998 |
| 5662983 | Stabilized containment facility liner The invention relates to a stabilized fluid barrier member and to methods of forming the same. The fluid barrier comprises a first outer sheet member having a top surface and a bottom surface, with a stabilizer element overlying at least part of the first... | 09/02/1997 |
| 5609438 | Flood barrier and a method for forming a flood barrier A trench is excavated from the top surface of an earthen dike, all the way down into the foundation below the base of the dike. Dry powder, partially hydrolyzed polyacrylamide (PHPA) is mixed with fresh water and soda ash in proportions of 20 lbs PHPA, to... | 03/11/1997 |
| 5454668 | Flood barrier and a method for forming a flood barrier A trench is excavated from the top surface of an earthen dike, all the way down into the foundation below the base of the dike. Dry powder, partially hydrolyzed polyacrylamide (PHPA) is mixed with fresh water and soda ash in proportions of 20 lbs PHPA, to... | 10/03/1995 |
| 5403125 | Method and apparatus for providing underground barrier An apparatus, method and system for installing water impervious barrier walls underground and particularly in levees. A mobile trailer movably mounted on rails carries upstanding front and rear masts and a carrier bar therebetween that is power driven up ... | 04/04/1995 |
| 5389166 | Water barrier formed from a clay-fiber mat A method of manufacturing a water barrier fabric, in flexible or rigid form, and articles manufactured thereby, formed by dispersing a water-absorbent material, in powdered or granular form, among a mass of fibers during the formation of a loose mat of sa... | 02/14/1995 |
| 5346566 | Water barrier of water-swellable clay or other abrasive material sandwiched between interconnected layers of flexible fabric sewn or needled together using a lubricant and/or a liquid adhesive A multi-layer article of manufacture includes an intermediate layer of a water-swellable colloidal clay, such as bentonite, sandwiched between two layers of flexible sheet or fabric material wherein the two flexible layers of sheet or fabric material are ... | 09/13/1994 |
| 5346565 | Water barrier of water-swellable clay sandwiched between interconnected layers of flexible fabric needled together using a lubricant A multi-layer article of manufacture includes an intermediate layer of a water-swellable colloidal clay, such as bentonite, sandwiched between two layers of flexible sheet or fabric material wherein the two flexible layers of sheet or fabric material are ... | 09/13/1994 |
| 5237945 | Water barrier formed from a clay-fiber mat A method of manufacturing a water barrier fabric, in flexible or rigid form, and article manufactured thereby, formed by dispersing a water-absorbent material, in powdered or granular form, among a mass of fibers during the formation of a loose mat of sai... | 08/24/1993 |
| 5221568 | Water and/or oil-permeable sealing mat consisting substantially of a substrate layer, a layer of swellable clay and a cover layer A water and/or oil-impermeable sealing mat is provided in form of a bentonite non-woven fabric combination with the possibility of transmitting shear from one batt layer to the other, i.e. on a slope shearing forces can be transmitted by the covering batt... | 06/22/1993 |
| 5143480 | Method for protecting dams, with pressureless dehydration by condensation and drainage of the water in the dam body A method and an assembly for protecting dams according to which dehydration of the dam body is obtained as a result of the differences in temperature between the concrete structure and a steam barrier defined by a water-proof protective sheathing. The con... | 09/01/1992 |
| 5041330 | Water and/or oil-impermeable sealing mat consisting substantially of a substrate layer, a layer of swellable clay and a cover layer A water and/or oil-impermeable sealing mat is provided in form of a bentonite non-woven fabric combination with the possibility of transmitting thrust from one batt layer to the other, i.e. on a slope thrust forces can be transmitted by the covering batt ... | 08/20/1991 |
| 4834579 | Waterproofing dams and the like A dam formed of roll-compacted concrete having an upstream side and a downstream side is provided with an impermeable membrane curtain. The curtain includes a vertical planar wall portion extending for the full depth of the dam and transversely for the fu... | 05/30/1989 |
| 4832528 | Watertight walls for hydraulic structures in compacted concrete and methods for constructing said walls Watertight wall for a dam or a dyke, composed of a plurality of horizontal layers of compacted earth-fillings, the wall comprising a rear wall which is composed of prefabricated panels of height equal to the height of several layers, each panel being equi... | 05/23/1989 |
| 4664560 | Profile to form a watertight screen in the ground and method of disposing the same A pair of sections each has a thin main body portion with male and female interlocking means along opposite side edges. The male interlocking means of one section is connected with the female interlocking means of the adjacent section in dovetail interloc... | 05/12/1987 |
| 4659252 | RCC dam construction and method A dam structure for retaining water in a reservoir includes precast concrete panel assembly forming the face or upstream side. A bonded impervious liner means, such as polyvinylchloride sheet, is provided on the downstream face of the precast concrete pan... | 04/21/1987 |
| 4508471 | Method and machine for the layered placing of core material and of the adjacent transitional material for dams Method for the layered placing of upright or sloping dam cores of material bound with bitumen and/or plastic and/or a natural binder in a constant or upward-tapering thickness for dams such as barrage dams characterized in that the core material is placed... | 04/02/1985 |
| 4266885 | Method of constructing a continuous cut-off wall and a core of a fill-type dam The present invention relates to a method of constructing a continuous cut-off wall and a core of a fill-type dam in the ground by placing or grouting at a normal temperature a mixture of a cold-setting property comprising a cement, coarse and fine aggreg... | 05/12/1981 |
