US Patent Issued to Keltech Engineering on June 30 for "Abrasive disc with vitrified agglomerate islands" (Minnesota Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,667,934, issued on June 30, was assigned to Keltech Engineering Inc. (Roseville, Minn.).

"Abrasive disc with vitrified agglomerate islands" was invented by Wayne O. Duescher (Roseville, Minn.) and Cameron M. Duescher (Lino Lakes, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An abrasive disc sheet article having patterns of vitrified abrasive particle agglomerate molded islands attached in annular bands on a flexible disc backing is used for high-speed water-spray cooled abrading and polishing without hydroplaning of workpieces. Hydroplaning is prevented as excess coolant water flows around the islands instead of forming a thick water film that s...