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:
Mar. 21, 1989
Filed:
Sep. 22, 1986
Jack W Sargeant, East Greenwich, RI (US);
William F Raleigh, Newhall, CA (US);
Attilio G Giordani, Panorama City, CA (US);
Teledyne Industries, Inc., Los Angeles, CA (US);
Abstract
Water heating methods and apparatus feed a combustible mixture of gas and air to an axial inlet of a cylindrical radiant surface burner and conduct water to be heated through a heat exchanger encompassing that cylindrical radiant surface burner as a cylindrical structure having first passages for combustion gases therethrough substantially radially of the cylindrical radiant surface burner and the heat exchanger. Methods and apparatus for changing the temperature in a mass of liquid circulate that mass of liquid by pumping the liquid in a path extending from that mass of liquid back to that mass of liquid, provide a bypass for part of the pumped liquid from a downstream portion of the path to an upstream portion of that path, provide and maintain a constant liquid flow for the part of the pumped liquid in the bypass, change the temperature of the part of the pumped liquid at the constant liquid flow in the bypass, and change the temperature in the mass by mixing at the upstream portion the part of the pumped liquid of changed temperature from the bypass with liquid pumped in the path.