ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,460,626, issued on Nov. 4, was assigned to Timmer GmbH (Neuenkirchen, Germany).
"Double membrane pump" was invented by Herbert Timmer (Neuenkirchen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A double membrane pump having a casing and a piston rod movably received in the casing, the casing having at least one inlet opening and at least one outlet opening, and a first membrane is arranged at one end of the piston rod and a second membrane is arranged at the other end of the piston rod. The first membrane is arranged in a first chamber of the double membrane pump and the second membrane is arranged in a second chamber. The membranes are designe...