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:
Mar. 23, 1993
Filed:
Jul. 11, 1991
Applicant:
Inventor:
Leroy F Stavinoha, Needville, TX (US);
Assignee:
Houston Industries Incorporated, Houston, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 / ; 356246 ;
Abstract
An assembly is provided for mounting on a flue or exhaust stack conveying combustion gases from a furnace. The assembly permits periodic calibration of a cross-duct flue gas analyzer which senses the flue gas concentrations in the combustion gases. The gas analyzer is calibrated while in place without requiring its removal from service.