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. 11, 1999
Filed:
Jul. 23, 1997
Applicant:
Inventor:
Thomas G Davis, Council Bluffs, IA (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
F23N / ;
U.S. Cl.
CPC ...
73 2331 ; 431 76 ;
Abstract
The method of invention involves the steps of placing a small hole in the flue of a furnace or the like; inserting the elongated probe of a CO tester in the hole; visually ascertain from the tester the CO content of the gas in the flue, comparing the measured CO content of the gas in the flue against a predetermined perimeter range of CO content between 0-45 ppm for furnaces, and 0-85 ppm for hot water boilers to determine the cleanliness of the combustible materials in the gas being combusted, and resealing the hole in the flue.