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. 24, 1981
Filed:
Jul. 16, 1979
Applicant:
Inventor:
Thomas A Barr, Huntsville, AL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
422 95 ; 422 98 ;
Abstract
An explosive gas detector employing an electrically conductive element which, when powered, changes temperature in the presence of an explosive gas, and a control circuit which senses the increases in temperature and decreases the power input to the element as an inverse function of changes in temperature of the element. The level of electrical power provided the element is indicative of the concentration of explosive gas present.