ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,378,975, issued on Aug. 5, was assigned to Q.E.D. Environmental Systems Inc. (Dexter, Mich.).

"Pneumatic fluid pump with dual rotational swirling cleaning action" was invented by John F. Schaupp (Sylvania, Ohio), Joseph Lawrence Schaffer (New Hudson, Mich.), Mark T. Weinberger (Mounds View, Minn.), Daniel P. Ross (Vadnais Heights, Minn.), Brett M. Crouse (Chelsea, Mich.) and Steven Richard Wells (Howell, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a fluid pump which has a pump casing, a top cap securable to an upper end of the pump casing and having an air intake port and a fluid discharge port. A fluid discharg...