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

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,667,935, issued on June 30, was assigned to KelTech Engineering Inc. (Roseville, Minn.).

"Abrasive vitrified agglomerate disc with porous 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 annular band patterns of vitrified abrasive particle agglomerate molded islands attached to a flexible disc backing is used for high-speed water-spray cooled abrading and polishing parts. Hydroplaning is prevented as excess coolant water flows around the islands instead of forming a thick water film that separates the island abrasi...