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:
Jun. 30, 2026
Filed:
May. 31, 2023
Wayne O. Duescher, Roseville, MN (US);
Cameron M. Duescher, Lino Lakes, MN (US);
Wayne O. Duescher, Roseville, MN (US);
Cameron M. Duescher, Lino Lakes, MN (US);
KelTech Engineering, Inc., Roseville, MN (US);
Abstract
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 abrasive and the parts. Vitrification encapsulates diamond abrasive particles in glass to strongly support them against abrading forces as the expensive diamond particles are progressively worn down. Solvent-based adhesives are used to mold the islands where evaporation of the solvent results in porous islands that provide controlled rates of island eroding. A porous filler material attached to the disc backing between the island structures carries water to contact the wafer surface and cool it during abrading. Interchangeable discs having different abrasive particle sizes are quickly attached with vacuum to flat rotatable platens.