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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 |
| 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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