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:
Jun. 14, 1977
Filed:
Apr. 05, 1976
Applicant:
Inventors:
Adolph L Micheli, Mount Clemens, MI (US);
Dennis F Dungan, Mount Clemens, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
2325 / ; 2325 / ; 60276 ; 73 1 / ; 136201 ; 136225 ; 1363 / ; 136239 ;
Abstract
An extremely high output and durable thermoelectric sensor for detecting the quantitative content of combustibles in an exhaust gas. Thick film coatings of lithia-nickel and doped titanium dioxide provide two thermocouple junctions on a ceramic substrate. An exhaust gas oxidation catalyst adjacent one of the junctions provides a junction temperature differential when the ceramic body is exposed to exhaust gas flow. The output difference between the two junctions is proportional to the concentration of residual combustibles in the exhaust gas.