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:
Oct. 03, 2017
Filed:
Jul. 01, 2014
Robert W. Stiles, Jr., Cary, NC (US);
Lars Hoffmann Berthelsen, Kolding, DK;
Peter Westermann-rasmussen, Soenderborg, DK;
Gert Kjaer, Soenderborg, DK;
Florin Lungeanu, Egersund, DK;
Robert W. Stiles, Jr., Cary, NC (US);
Lars Hoffmann Berthelsen, Kolding, DK;
Peter Westermann-Rasmussen, Soenderborg, DK;
Gert Kjaer, Soenderborg, DK;
Florin Lungeanu, Egersund, DK;
Pentair Water Pool and Spa, Inc., Cary, NC (US);
Danfoss Drives A/S, Graasten, DK;
Abstract
A pumping system for at least one aquatic application comprises a motor coupled to a pump and a controller in communication with the motor. The controller may be adapted to determine a first motor speed, determine a present flow rate using curves of speed versus flow rate for discrete power consumptions, generate a difference value between the present flow rate and a reference flow rate, and/or drive the motor at a second motor speed based on the difference value until reaching a steady state condition.