The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 2026
Filed:
Apr. 03, 2025
Viking Pump, Inc., Cedar Falls, IA (US);
David Fowler, Pevensey, GB;
Michael Strei, Cedar Falls, IA (US);
Sven Schimmel, Reckendorf, DE;
Max Portocarrero, Chicago, IL (US);
Viking Pump, Inc., Cedar Falls, IA (US);
Abstract
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 least a portion of a secondary fluid chamber. The secondary pump is configured to operably pump a secondary fluid into and out of the secondary fluid chamber, resulting in the compression and expansion of the inner liner. The pump system further includes a valve in fluid communication between the external atmosphere and the secondary fluid chamber and/or between the external atmosphere and an intermediate chamber formed between an exterior of the inner liner and interior of a flexible intermediate liner disposed between the inner liner and the outer liner.