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:
Apr. 06, 2021
Filed:
Jun. 06, 2019
Applicant:
Ademco Inc., Golden Valley, MN (US);
Inventors:
Adam Foley, Blaine, MN (US);
John D. Mitchell, Maple Grove, MN (US);
Rolf L. Strand, Crystal, MN (US);
Timothy J. Smith, Minneapolis, MN (US);
Assignee:
Ademco Inc., Golden Valley, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F24H 1/18 (2006.01); G05D 23/19 (2006.01); F24H 9/20 (2006.01);
U.S. Cl.
CPC ...
F24H 9/2035 (2013.01);
Abstract
A water heater may be configured to detect a possible main gas valve non-closure condition in which the sensed water temperature continues to rise while a thermopile signal reaches a stable state. When the possible main gas valve non-closure condition is detected, the controller may be configured to toggle the main gas valve ON and determine whether the thermopile signal from the thermopile changes from the stable state or not by at least a predetermined amount.