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Class Information
Number: 210/166
Name: Liquid purification or separation > Structural installation > Grated inlet surface drain > Concentric guard ring or rib
Description: Apparatus comprising a concentric ring or rib between the strainer and its associated surface wherein the ring or rib projects above the plane of the surface.










Patents under this class:
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Patent Number Title Of Patent Date Issued
7959799 Street curb filter basket system Jun. 14, 2011
7682104 Culvert inlet protection device Mar. 23, 2010
7442296 Disposable sink drain strainer Oct. 28, 2008
7300573 Catch basin filter Nov. 27, 2007
7132045 Sanitary, storm and catch basin trap with filter insert Nov. 7, 2006
7011746 Rainwater surface drain Mar. 14, 2006
7005061 Drain filter device Feb. 28, 2006
6994786 Phosphate beneficiation process using methyl or ethyl esters as float oils Feb. 7, 2006
6631588 Clog-free roof drain cover Oct. 14, 2003
6615817 Recycling system of wire saw abrasive grain slurry and centrifugal separators therefor Sep. 9, 2003
6428693 Temporary silt guard for sewer inlet Aug. 6, 2002
6416674 Silt-guard apparatus for use in a detention pond Jul. 9, 2002
6344137 Superimposed drain cover Feb. 5, 2002
6270662 Drain basin filter insert system Aug. 7, 2001
6261445 Temporary silt guard for sewer inlet Jul. 17, 2001
6217757 Storm drain filter with vertical screens Apr. 17, 2001
6202749 Well screen system Mar. 20, 2001
6093314 Drain insert for storm water sewer systems, and method of manufacture Jul. 25, 2000
6059964 Collapsible catch basin grate filter assembly May. 9, 2000
6004457 Temporary silt guard for sewer inlet Dec. 21, 1999
5843306 Temporary silt guard for storm water collection basin inlet Dec. 1, 1998
5800092 Method for delaying run-off of flash-storm water or ordinary rainwater from roofs and other surfaces with water-retention capability Sep. 1, 1998
5769566 Catch basin splash guard Jun. 23, 1998
5744048 Clog resistant storm drain filter Apr. 28, 1998
5733444 Debris catcher for manholes and catch basins Mar. 31, 1998
5702596 Roof water inlet Dec. 30, 1997
5650065 Skimmer cover for dry well in a catch basin Jul. 22, 1997
5632889 Filter cartridge for separating liquid hydrocarbons from water May. 27, 1997
5618416 Roof drain Apr. 8, 1997
5615526 Drains for single layer synthetic roofing and waterproofing membranes Apr. 1, 1997
5469670 Roof drain Nov. 28, 1995
5458769 Floor drain Oct. 17, 1995
5394657 Method and apparatus for free-standing water removal from roof and siphon head therefore Mar. 7, 1995
5378356 Roof drain structure Jan. 3, 1995
5376264 Drain trap Dec. 27, 1994
5372715 Siphonage floor drain and port protector Dec. 13, 1994
5341523 Anti-vortex drain Aug. 30, 1994
5337795 Apparatus for introducing filler material into containers Aug. 16, 1994
5285828 Apparatus for introducing filler material into containers Feb. 15, 1994
5102537 Piping outlet protector Apr. 7, 1992
5051175 Drain guard Sep. 24, 1991
4964180 Shower strainer mounting assembly Oct. 23, 1990
4961848 Drain grate with primary and secondary weirs Oct. 9, 1990
4658449 Proctective adapter for pool drain Apr. 21, 1987
4652365 Waste screen Mar. 24, 1987
4525273 Drain grate with adjustable weirs Jun. 25, 1985
4505814 Adjustably extensible roof drain receptacle Mar. 19, 1985
4475844 Method and apparatus for restricting local variations in ground level in the vicinity of surface water drains and manholes Oct. 9, 1984
4418432 Drain filter having filamentary surface irregularities to entangle hair and debris Dec. 6, 1983
4400272 Drain grate with adjustable weirs Aug. 23, 1983

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