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US 8,127,451 B1Granted
Method for supporting loads in a coal-dust-laden environment
AssigneeRepublic Industries International, Inc.
InventorsRobert Darst, Carl Coslow, Ray Gulley
Life of this patent
Estimating the term…
Abstract
A bearing for use in a particulate-laden environment uses the particles as a lubricant between the opposed bearing surfaces, which are coated with a tungsten carbide coating that is harder than the particles.
Claims3
A method for supporting loads in a coal-dust-laden environment, comprising the steps of:
- providing first and second opposed bearing surfaces;
- and
- introducing coal dust between said first and second opposed bearing surfaces to serve as a lubricant, wherein both said first and second opposed bearing surfaces have a Rockwell C Hardness greater than 50 and include a surface coating with tungsten carbide particles dispersed in an alloy matrix, and wherein said first bearing surface rotates with an auger shaft, and said second bearing surface supports said first bearing surface and said auger shaft as the auger shaft rotates.
Dependencies are inferred from the claim text.