The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 16, 2010
Filed:
Sep. 25, 2008
Richard Buonfiglio, Salem, MA (US);
Richard Buonfiglio, Salem, MA (US);
Dominion Resources, Inc., Richmond, VA (US);
Abstract
A tension adjustment gauge system and method for a ball and ring coal pulverizer is provided that includes a housing, a stationary top grinding ring within the housing, a rotating lower grinding ring within the housing, a plurality of grinding balls between the top grinding ring and the lower grinding ring, an adjustable loading system for applying a compressive force exerted on the top grinding ring and grinding balls against the lower grinding ring. The adjustable loading system includes a single hydraulic assembly mounted on the upper portion of the housing, a gauge mounted to the hydraulic assembly for determining linear movement of a piston of the hydraulic assembly, a plurality of threaded rods mounted to the upper portion of the housing capable of being manually adjusted. The movement of the piston corresponds to an equal distance of movement of a spring gap between an upper and lower portion of the compression spring, such that the gauge indicates the change in the spring gap by moving the piston. The tension adjustment gauge system is more efficient and less time consuming to perform tension adjustments to the ball and ring coal pulverizer.