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:
May. 27, 1997
Filed:
Jul. 07, 1995
Franco Consadori, Salt Lake City, UT (US);
D George Field, Pleasant Grove, UT (US);
Kevin D Banta, Sandy, UT (US);
Gary S Nichols, Sandy, UT (US);
Atwood Industries , Inc., Rockford, IL (US);
Abstract
A gas fired appliance measures infrared emissions from a metal object heated in a combustion chamber to evaluate combustion. Associated circuitry uses the evaluation to control operational parameters of the appliance, including fuel and air fed to the appliance. A second metal object, prior to fuel ignition, is electrically heated to emit infrared radiation. Infrared emissions from the second metal object, indicative of the temperature thereof, are monitored to assure an ignition temperature to ignite a combustible air and fuel mixture. A fan directs a stream of ambient air upon the second metal object to cool the same and reduce the infrared emanating therefrom. The reduction in infrared from the second metal object is monitored to verify proper fan operation.