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Class Information
Number: 209/459
Name: Classifying, separating, and assorting solids > Stratifiers > With liquid treatment > Stationary bed > Chutes and tables > Annular, circular or spiral
Description: Stationary circular, annular, or spiral tables or chutes on which material with mingled, accompanying or added, liquid is treated, so that the heaviest constituents may settle as a stratum, while the lighter form relatively displaced strata or are carried away by the liquid.










Patents under this class:

Patent Number Title Of Patent Date Issued
8459465 Adjustable spiral concentrator Jun. 11, 2013
8317033 Method and device for concentrating substances in solid particle state Nov. 27, 2012
7686170 Deflector for spiral separator, and method of spiral separation Mar. 30, 2010
7296686 Directional nozzle for a spiral separator Nov. 20, 2007
6527125 Washing liquid distribution system Mar. 4, 2003
6467630 Continuous particle and molecule separation with an annular flow channel Oct. 22, 2002
6336559 Spiral separator with replaceable trough sections Jan. 8, 2002
6264041 Adjustable splitter assembly for spiral separator Jul. 24, 2001
5817230 Method for improving the pozzolanic character of fly ash Oct. 6, 1998
5535892 Two stage compound spiral separator and method Jul. 16, 1996
5472096 Spiral concentrator Dec. 5, 1995
5452805 Spiral separator Sep. 26, 1995
5244155 Solid-solid separations utilizing alkanol amines Sep. 14, 1993
5192422 Oil shale beneficiation process using a spiral separator Mar. 9, 1993
5184731 Spiral separator with improved separation surface Feb. 9, 1993
4986424 Process and apparatus for separating materials of different shapes or sizes Jan. 22, 1991
4961842 Siphon gravity classifier and clarifier Oct. 9, 1990
4865311 Playground slide construction Sep. 12, 1989
4836926 Staggered spiral splitters Jun. 6, 1989
4795553 Spiral separator Jan. 3, 1989
4781822 Spiral separator Nov. 1, 1988
4750993 Process and apparatus for the separation of metallic components from nonmetallic components of a mixture Jun. 14, 1988
4747943 Splitter assembly May. 31, 1988
4731270 Laminated trough for a spiral concentrator and process for construction of same Mar. 15, 1988
4678588 Continuous flow centrifugal separation Jul. 7, 1987
4664789 Classifying device May. 12, 1987
4659457 Gravity-magnetic ore separators and methods Apr. 21, 1987
4614580 Spiral separator Sep. 30, 1986
4597861 Spiral separator Jul. 1, 1986
4563279 Spiral separators Jan. 7, 1986
4553673 Method and apparatus for obtaining undercuts of concentrates from pulp flow in spiral separators Nov. 19, 1985
4545900 Spiral separators Oct. 8, 1985
4505811 Mineral processing apparatus Mar. 19, 1985
4476980 Spiral separator Oct. 16, 1984
4428830 Precious metals recovery unit Jan. 31, 1984
4416768 Ore beneficiation Nov. 22, 1983
4384650 Spiral separator May. 24, 1983
4324334 Spiral separators Apr. 13, 1982
4277330 Spiral separators Jul. 7, 1981
4209386 Method and apparatus for the wet gravity concentration of ores Jun. 24, 1980
4189378 Spiral separators Feb. 19, 1980
4183806 Gravitational separator employing an improved eluent supply system Jan. 15, 1980
4152257 Conical concentrator with partial flow combination May. 1, 1979
4150093 Method for concentrating heavy minerals in the solids tailings from hot water extraction of tar sands Apr. 17, 1979
4138467 Method for concentrating heavy minerals in the solids tailings from hot water extraction of tar sands Feb. 6, 1979
4128474 Process for cleaning and dewatering fine coal Dec. 5, 1978
4070274 Coarse concentrated iron ore for catalytic purposes Jan. 24, 1978
4059506 Ore tailings treatment Nov. 22, 1977











 
 
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