ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,757, issued on June 17, was assigned to KSB SE & Co. KGaA (Frankenthal, Germany).
"Centrifugal pump for conveying media containing solids" was invented by Markus Pittroff (Frankenthal, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A centrifugal pump for conveying media containing solids includes at least one arrangement for reducing a backflow from a first chamber into a second chamber. The at least one arrangement includes at least one non-rotating element that cooperates with at least one rotating counter element. At least one of the at least one non-rotating element and the at least one rotating element I coated at least in parts by a te...