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| Number | Title | Issue Date |
| 7343827 | System and process for break detection in porous elements for screening or filtering A method of detecting breaks in a porous element in a material separator is disclosed. A shielding is created in the material separator to form a barrier to RF energy. The shielding is formed with a path through the barrier capable of allowing RF energy and material... | 03/18/2008 |
| 6722504 | Vibratory separators and screens A vibratory separator with a base, vibrating apparatus, a screen container on the base, the screen container having a plurality of spaced-apart drain holes, a plurality of spaced-apart screens in the screen-container, said screens oriented vertically within the scre... | 04/20/2004 |
| 5908115 | Method and apparatus for the classification of solid particles A method and apparatus for the classification of solid particles, in particular powdery catalytic components for the polymerization of olefins, which comprises sending solid particles suspended in a transporting gas flow through a screening device. Immedi... | 06/01/1999 |
| 4657636 | High density pulp screening apparatus A high density pulp slurry screening apparatus is disclosed which has a cylindrical casing including a first chamber in the center with an intake port for introducing unrefined pulp slurry and a discharge port for discharging foreign matters which have be... | 04/14/1987 |
| 4597358 | Powder sifter and dispenser A dispensing apparatus for metering, sifting and feeding powder comprises a vertical duct with a single, screen-covered outlet at the bottom and a rotary agitator having solid fingers separated by radiused notches on a vertical shaft above the screen. The... | 07/01/1986 |
| 4563269 | Classifier A classifier for separating into particulate matter relatively coarse and fine particles. The classifier includes a casing, at least one cylindrical screen assembly mounted in the casing and extending substantially in the direction in which the particulat... | 01/07/1986 |
| 4229286 | Apparatus and method for removing dust from tufts of opened cotton fiber Apparatus and method for removing dust and trash from tufts of opened cotton fiber stock includes entrance and exit ducts for airborne transport of the tufts to and from a housing having passages for the tufts therethrough, a screen disposed therein, a pa... | 10/21/1980 |
| 4172028 | Fine particle separation by electrostatically induced oscillation The classification of small particles is performed by utilizing the oscillation of particles as they pass through electric fields. The apparatus utilizes vertically spaced sieve electrodes which are at the same or at a different potential as a particle ch... | 10/23/1979 |
| 4000063 | Apparatus for separating knots from pulp An improved system for the production of digested pulp from wood chips and knots which includes a separating apparatus, connected to the digester output, capable of separating knots from partially cooked wood chips and fibers at the digester pressure and ... | 12/28/1976 |
