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:
Jun. 27, 1995
Filed:
Jul. 01, 1993
Applicant:
Inventors:
Kailash C Shukla, Stow, MA (US);
Maurice Nunes, Arlington, MA (US);
Dean T Morgan, Sudbury, MA (US);
Assignee:
Southern California Gas Company, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F23D / ;
U.S. Cl.
CPC ...
431350 ; 431 10 ; 431326 ; 431328 ; 1263 / ;
Abstract
A two stage, atmospherically supplied burner which produces reduced levels of NO.sub.x in applications such as residential water heaters or light commercial applications. A novel, perforated plate first stage burner is disclosed for first stage combustion. A variety of embodiments disclose various approaches to supplying atmospheric to support second stage combustion. A conventional first stage burner is also disclosed with modifications to achieve two-stage, atmospherically supplied combustion.