US Patent Issued to Viking Pump on July 7 for "Expandable, inner liner pump" (American, British, German Inventors)

ALEXANDRIA, Va., July 7 -- United States Patent no. 12,674,450, issued on July 7, was assigned to Viking Pump Inc. (Cedar Falls, Iowa).

"Expandable, inner liner pump" was invented by David Fowler (Pevensey, Great Britain), Michael Strei (Cedar Falls, Iowa), Sven Schimmel (Reckendorf, Germany) and Max Portocarrero (Chicago).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a pump system that includes a primary pump and a secondary pump. The primary pump pumps a primary fluid. A pump unit of the primary pump includes an inner liner defining a primary fluid chamber and also includes an outer liner disposed around the inner liner. The inner liner is expandable. An interior of the outer liner defines at l...