ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,825, issued on May 13, 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 first pump unit of the primary pump includes a first inner liner defining a first primary fluid chamber and also includes a first outer liner disposed around the first inner liner. The interior of the first outer liner defines...