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:
May. 30, 2017
Filed:
Oct. 07, 2015
David E. Seitz, San Antonio, TX (US);
David E. Seitz, San Antonio, TX (US);
James Dabney, Houston, TX (US);
Louis Everett, El Paso, TX (US);
Thomas L. Harman, Houston, TX (US);
Other;
Abstract
A water heater with a housing having an internal chamber, an inlet port, and an outlet port; a heating element coupled to the housing; a water inlet line; a water outlet line; an inlet temperature sensor within the water inlet line; an outlet temperature sensor within the water outlet line; and a controller electrically connected to the inlet temperature sensor, the outlet temperature sensor, and the electrically power heating element. The controller is operable to detect a flow condition without using mechanical flow detection means and without supplying stand-by heating by adding an absolute value of the sensed change in temperature of water flowing upstream from the inlet port to the absolute value of the sensed change in temperature of the water flowing downstream from the outlet port to yield a sum and comparing the sum to a reference temperature.