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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.:

US 9212817 B1

PDFFull Text
Date of Patent:
Dec. 15, 2015

Filed:

Dec. 01, 2010

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Applicants:

Yonghua Cheng, Fergus, CA;

Liliang Dou, Nanjing, CN;

Larry Chanasyk, Fergus, CA;

Dayan BI, Nanjing, CN;

Hongfei MA, Nanjing, CN;

Inventors:

Yonghua Cheng, Fergus, CA;

Liliang Dou, Nanjing, CN;

Larry Chanasyk, Fergus, CA;

Dayan Bi, Nanjing, CN;

Hongfei Ma, Nanjing, CN;

Assignee:

A. O. SMITH CORPORATION, Milwaukee, WI (US);

Attorney:

Michael Best & Friedrich LLP

Primary Examiner:

Gregory Huson

Assistant Examiner:

Nikhil Mashruwala

Int. Cl.
CPC ...
F23D 14/04 (2006.01); F23D 14/10 (2006.01); F23D 14/48 (2006.01); F23D 14/64 (2006.01); B23P 19/00 (2006.01); F24H 1/10 (2006.01); F24H 9/18 (2006.01); F24H 1/14 (2006.01);
U.S. Cl.
CPC ...
F23D 14/04 (2013.01); B23P 19/00 (2013.01); F23D 14/045 (2013.01); F23D 14/105 (2013.01); F23D 14/48 (2013.01); F23D 14/64 (2013.01); F24H 1/107 (2013.01); F24H 1/145 (2013.01); F24H 9/1836 (2013.01); Y10T 29/49348 (2015.01);
Abstract

A method of assembling multiple low NOburners (), a low NOburners () and a tankless gas-fired water heater () are disclosed. The method includes the step of assembling multiple bodies (), each body () includes multiple first burner ports () connected to a first burner inlet () and multiple second burner ports () connected to a second burner inlet (). The method also includes the step of selecting one of the bodies () and inserting a first inlet tube () into the second burner inlet () to provide a fuel/air mixture to the second burner ports () at a first rate. The method also includes the step of selecting one of the bodies () and inserting a second inlet tube () into the second burner inlet () to provide the fuel/air mixture to the second burner ports () at a second rate different from the first rate.

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