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. 17, 2023
Filed:
May. 19, 2021
A. O. Smith Corporation, Milwaukee, WI (US);
Andrew William Phillips, Scottsdale, AZ (US);
Christopher Glynne Townsend, Chandler, AZ (US);
Ray O. Knoeppel, Hartland, WI (US);
Brian T. Branecky, Oconomowoc, WI (US);
Kedar D. Dimble, Milwaukee, WI (US);
A. O. Smith Corporation, Milwaukee, WI (US);
Abstract
A water heater includes a tank configured to hold a fluid, a sacrificial anode located within the tank, and a controller coupled to the sacrificial anode. The controller is configured to selectively complete and break an electrical circuit connecting the tank and the sacrificial anode. The controller is also configured to measure a shorted anode current through the electrical circuit, to determine a modulation duty cycle based on a current setpoint and the measured shorted anode current, and to repeatedly complete and break the electrical circuit using the modulation duty cycle.