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| Number | Title | Issue Date |
| 5785182 | Portable finishing sluice A small sluice for final separation of gold from all other materials commonly found in deposits of gravel, sand, etc. including a bottom panel (14) with a plurality of grooves (16), two substantially vertical sidewalls (15), a flared entrance end (13) and... | 07/28/1998 |
| 5443737 | Rotary drum with radial spray jets A separation device for suspensions comprises a housing (1), a filter body (3) with a wall of filter material situated in the housing, spray means (14) adapted to spray jets of a suspension to be separated directly onto one side of the wall of filter mate... | 08/22/1995 |
| 5048693 | Method and apparatus for sorting articles with small density differences utilizing a flotation stream A method and apparatus for sorting articles with small density differences utilizing a flotation stream. A separator is provided in which a flotation stream continuously flows through a trough and is used to effect the separation of a mixture of articles ... | 09/17/1991 |
| 4953709 | Multi-stage means for sorting mixtures of solid materials An apparatus for sorting lightweight from heavy material in mixtures of solid materials containing lumpy, granular, and pulverous constituents substantially comprises an upright slim container having a lower portion into which material for sorting is intr... | 09/04/1990 |
| 4795553 | Spiral separator In a spiral separator of the kind used for the wet gravity separation of solids (Figs. 5 & 6) there are provided splitters (70,71,72) in vertically aligned troughs (20,21,22) which are operatively connected by a linkage (80) permitting adjustment of split... | 01/03/1989 |
| 4461700 | Rotary feeder A rotary feeder for simultaneous screening and discharging of material from the bottom part of a fluidized bed reactor. The rotary feeder is provided with a rotor having blades, between which pockets are formed. In the rotary feeder there is disposed an a... | 07/24/1984 |
| 4328093 | Device for separating granulated material from a fluid flow A device for separating and recovering solid particles or granulated matel from a stream of fluid in a state of high purity and with minimal fluid remaining in the recovered solids. The device also provides a calibration or sizing of the recovered solids... | 05/04/1982 |
| 4234415 | Apparatus for separating solids Improved apparatus for separating mixed solids of different specific gravities by means of a liquid medium comprising rotatable means defining a frustro-conical separation chamber having a lighter solid outlet at one end and a heavier solid outlet at the ... | 11/18/1980 |
| 4071440 | Method and apparatus of stratification with tangential feed Method of separation of a mixture of mineral grains with differentiated sific gravity, under the conditions of a restricted sedimentation, in a cylindrical device, consists therein that the mixture A of the mineral with water is radially supplied to a tr... | 01/31/1978 |
| 4060482 | Method of and apparatus for separating fractions of different density contained in ores or other solid materials Fractions of different densities contained in an ore or other solid material are separated by directing the solid material in a liquid suspension on to a surface of an endless belt, moving in the direction of its length and inclined transversely to its di... | 11/29/1977 |
| 4028231 | Vacuum type coal separator A device for circulating liquid by vacuum, that is carrying two or more particles of different densities. The particles are separated and then discharged through a discharge bowl to separate receptacles, and the liquid is returned for re-use.... | 06/07/1977 |
