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:
Apr. 07, 2015
Filed:
Apr. 16, 2014
Applicant:
Serveron Corporation, Beaverton, OR (US);
Inventor:
Steven Mahoney, Beaverton, OR (US);
Assignee:
Serveron Corporation, Beaverton, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 33/28 (2006.01); G01N 21/77 (2006.01); G01N 1/22 (2006.01);
U.S. Cl.
CPC ...
G01N 33/2841 (2013.01);
Abstract
A reliable, low cost device for determining when dangerous levels of hydrogen gas have been generated in a transformer is disclosed. The hydrogen indicator is defined by a module assembly that threads into either the headspace or into the oil-filled body of a transformer. The module has an open interior that contains a film that incorporates a hydrogen-sensitive chemochromic indicator. The indicator film is visible through a lens. When the film has been exposed to hydrogen, chemical changes in the chemochromic indicator cause the film to change color—the color change is immediately visible through the lens.