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| Number | Title | Issue Date |
| 6874715 | EL type pulverizers Improvements in EL type pulverizers provide for longer wear life and reduced incidences of parts failures include: deep-dish contour grinding rings, tight tolerance ball tracks, heavy-duty top grinding ring flukes, larger diameter grinding balls, and an improved all... | 04/05/2005 |
| 6783091 | Two-fluted housing liner A pulverizer housing liner for the housing unit of an EL pulverizer is made up of an arcuate liner body having an inner curved surface forming a segment of the circular housing unit and two circumferentially spaced flutes fixed to the inner surface. ... | 08/31/2004 |
| 6609669 | Hydraulic loading system for ball and ring pulverizers An hydraulic loading assembly for ball and ring coal pulverizers has a plurality of compression assemblies connected to a common hydraulic controller for exerting equal pressure simultaneously on each of the compression assemblies. The compression assembl... | 08/26/2003 |
| 6003439 | Microflake glitter fabrication A metallic flake manufacturing device uses a bearing to form the flakes. The bearing is located within a container which receives a fluid having suspended metallic particles. The bearing has an outer race, an inner race, and a plurality of bearings dispos... | 12/21/1999 |
| 5899394 | Ring roller mill A method for grinding of material in a ring roller mill having at least one grinding ring, at least one roller fitted in the grinding ring and at least one unit fitted between the roller and the grinding ring. The method includes the steps of operating th... | 05/04/1999 |
| 5868186 | Debarking wood without introducing contaminants into the wood This invention relates to a wood chip recovery system which removes bark from roundwood or wood chips. It is desirable for such structures of this type to recover the wood chips from the bark without introducing contaminants, such as metal ions like iron,... | 02/09/1999 |
| 4874135 | Mill throat for pulverizer In the vertically oriented generally cylindrical coal pulverizers that are widely employed to supply a coal-air dispersion to the combustion zones of boilers producing steam for the turbines of electric-power plants, forced-air requirements are reduced an... | 10/17/1989 |
| 4721258 | Roll-and-race pulverizer with rotating throat A roll-and-race pulverizer is disclosed in which the throat vanes are mounted for rotation in the direction of rotation of the grinding ring.... | 01/26/1988 |
| 4687145 | Roll-and-race pulverizer with rotating throat A roll-and-race pulverizer is disclosed in which the throat vanes are mounted for rotation in the direction of rotation of the grinding ring.... | 08/18/1987 |
| 4264041 | Low pressure drop pulverizer throat A new and improved design of a pulverizer air throat for low-pressure drop, reduced erosion and improved flow distribution.... | 04/28/1981 |
| 4240586 | Method and apparatus for crushing and classifying particulate material Friable particulate material is crushed and classified by apparatus comprising a grinder apparatus operatively positioned in the hollow interior of a relative rotationally mounted container. The grinder apparatus preferably comprises three rotationally mo... | 12/23/1980 |
| 4153209 | Grinders A grinder for material wherein a series of hollow balls is entrained for rotational movement between an upper ring and a lower ring, the rings being relatively rotatable about a control axis, and the balls being rotatable between the rings, and the materi... | 05/08/1979 |
| 4049203 | Coal slurry drying apparatus A coal slurry drier which comprises a pulverizer having a housing enclosing a pulverizing zone including horizontally disposed upper and lower grinding rings. A circular row of rotatable grinding elements is positioned between the upper and lower rings. H... | 09/20/1977 |
