ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,561, issued on Oct. 14, was assigned to A. O. SMITH Corp. (Milwaukee).
"Water heating system and method of operating the same" was invented by Brian Branecky (Oconomowoc, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A water heating system includes a burner and a gas valve fluidly connected to the burner to deliver a flow of combustible gas thereto. The gas valve has an adjustable throttle for the flow of combustible gas, along with a motor to adjust a position of the throttle. A controller is configured to determine a throttle position corresponding to a target air-fuel ratio of the burner during a calibration sequence, and to control the mot...