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:
Aug. 16, 2011
Filed:
Jan. 05, 2009
Robert L. Hosfield, Centerville, MN (US);
Robert S. Horeck, Fridley, MN (US);
Lawrence C. Arvidson, Andover, MN (US);
Robert L. Hosfield, Centerville, MN (US);
Robert S. Horeck, Fridley, MN (US);
Lawrence C. Arvidson, Andover, MN (US);
Sta-Rite Industries, LLC, Delavan, WI (US);
Abstract
Embodiments of the invention provide a foam proportioning system. The foam proportioning system can include a foam pump, at least one foam line, a divert, and at least one controller. The divert can direct a portion of a flow of a liquid foam concentrate downstream of the foam pump back through the foam pump. The controller, which can be in communication with the foam pump and the divert, can be configured to automatically maintain a minimum flow rate of the liquid foam concentrate through the foam pump.