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:
Apr. 13, 2004
Filed:
Aug. 30, 2002
Applicant:
Inventors:
Dennis Brazier, Greenbush, MN (US);
Mark Jeremy Reese, Greenbush, MN (US);
Rodney Lyle Tolefson, Greenbush, MN (US);
Assignee:
Central Boiler, Inc., Greenbush, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F23B 7/00 ;
U.S. Cl.
CPC ...
F23B 7/00 ;
Abstract
A multi-fuel boiler having multiple, independent draft or combustion air sources and controls. A conventional oil/gas burner and nozzle assembly is fitted to an injector tube and isolated from a thermal transfer medium. A butterfly valve is supported in the injector tube and a motorized linkage directs valve operation. When the burner is non-operational, the valve prevents secondary combustion air from passing through the oil/gas burner to effect combustion in the firebox.