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. 10, 2001
Filed:
Aug. 10, 1999
Franklin T. Schmidt, Mulvane, KS (US);
The Coleman Company, Inc., Wichita, KS (US);
Abstract
A heating apparatus for combusting a fuel-air mixture which includes a combustion chamber with an inlet at one end and a combustion outlet at the other end, a catalyst-containing substrate disposed in the combustion chamber, a fuel supply in communication with the inlet for supplying fuel, and a fuel-air mixing assembly for providing a uniform fuel-air mixture to the combustion chamber. The mixing assembly includes one or more openings for drawing a controlled proportion of primary air which is mixed with the fuel and combusted in the combustion chamber. The use of primary air improves efficiency and reduces the reliance on secondary air. Limiting the proportion of primary air to approximately 15-20% of the stoichiometric mass of air required substantially reduces the emission of hazardous combustion by-products such as carbon monoxide.