ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,047, issued on May 27, was assigned to Alfred Karcher SE & Co. KG (Winnenden, Germany).

"Piston pump for a high pressure cleaning device" was invented by Robert Nathan (Winnenden, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A piston pump for a high-pressure cleaning device is provided, having a pump housing, which includes a first housing part and a second housing part. The first housing part forms a suction conduit and a pressure conduit, and the second housing part forms a plurality of pump chambers into each of which a reciprocally movable piston dips and which are each in flow connection with the suction conduit by way of an inlet cha...