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:
Nov. 06, 2018
Filed:
Jan. 22, 2015
Applicant:
Franklin Electric Co., Inc., Fort Wayne, IN (US);
Inventors:
Wei Song, Fort Wayne, IN (US);
Robert Wetekamp, Fort Wayne, IN (US);
Assignee:
Franklin Electric Co., Inc., Fort Wayne, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/42 (2006.01); F04B 49/06 (2006.01); F04B 17/04 (2006.01); F04B 49/10 (2006.01); G01R 19/175 (2006.01); G01R 31/28 (2006.01);
U.S. Cl.
CPC ...
F04B 49/06 (2013.01); F04B 17/04 (2013.01); F04B 49/10 (2013.01); F04B 49/103 (2013.01); G01R 19/175 (2013.01); G01R 31/2837 (2013.01); G01R 31/42 (2013.01);
Abstract
A pump and a method of operating the pump at a duty-cycle based on the input voltage of the power source energizing the pump. The pump includes at least a first opto-coupler electrically coupled to the power source. The method includes detecting at least a first opto-coupler state transition; determining a zero-crossing of the input voltage; determining an elapsed time between the zero-crossing and the first opto-coupler state transition; and operating the pump by energizing a power switch at a duty-cycle based on the elapsed time.