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. 02, 2024
Filed:
May. 05, 2021
Franklin Electric Co., Inc., Fort Wayne, IN (US);
Adrian Chavis, Fort Wayne, IN (US);
Kevin Michael Fox, New Haven, IN (US);
FRANKLIN ELECTRIC CO., INC., Fort Wayne, IN (US);
Abstract
A method to detect gulping in a pump driven by a motor drive to pump a liquid includes: determining a value of a work indicator corresponding to work performed by a pump pumping a liquid; comparing the value to a first threshold; changing a value of a tracking variable by a first amount if the value of the work indicator is below the threshold; changing the value of the tracking variable by a second amount if the value of the work indicator is above the threshold, wherein the first amount and the second amount have opposite signs; and determining that a gulping event occurred if an absolute value of the tracking variable is larger than an absolute value of a second threshold.