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Class Information
Number: 405/109
Name: Hydraulic and earth engineering > Fluid control, treatment, or containment > Flow control > Artificial water barrier (e.g., dam, levee, etc.) > Having impervious core
Description: Method or apparatus in which an impermeable center is placed in the barrier to prevent seepage.










Patents under this class:

Patent Number Title Of Patent Date Issued
7614826 Method and device for waterproofing and draining off infiltrated water in hydraulic structures Nov. 10, 2009
6691472 Foundation wall protector Feb. 17, 2004
6053662 Panel assembly for RCC dam and construction method Apr. 25, 2000
5720576 Underwater construction of impermeable protective sheathings for hydraulic structures Feb. 24, 1998
5662983 Stabilized containment facility liner Sep. 2, 1997
5609438 Flood barrier and a method for forming a flood barrier Mar. 11, 1997
5454668 Flood barrier and a method for forming a flood barrier Oct. 3, 1995
5403125 Method and apparatus for providing underground barrier Apr. 4, 1995
5389166 Water barrier formed from a clay-fiber mat Feb. 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 Sep. 13, 1994
5346565 Water barrier of water-swellable clay sandwiched between interconnected layers of flexible fabric needled together using a lubricant Sep. 13, 1994
5237945 Water barrier formed from a clay-fiber mat Aug. 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 Jun. 22, 1993
5143480 Method for protecting dams, with pressureless dehydration by condensation and drainage of the water in the dam body Sep. 1, 1992
5041330 Water and/or oil-impermeable sealing mat consisting substantially of a substrate layer, a layer of swellable clay and a cover layer Aug. 20, 1991
4834579 Waterproofing dams and the like May. 30, 1989
4832528 Watertight walls for hydraulic structures in compacted concrete and methods for constructing said walls May. 23, 1989
4664560 Profile to form a watertight screen in the ground and method of disposing the same May. 12, 1987
4659252 RCC dam construction and method Apr. 21, 1987
4508471 Method and machine for the layered placing of core material and of the adjacent transitional material for dams Apr. 2, 1985
4266885 Method of constructing a continuous cut-off wall and a core of a fill-type dam May. 12, 1981
4090363 Dam of earth or rock fill having impervious core May. 23, 1978











 
 
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