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:
Sep. 28, 2010
Filed:
Aug. 24, 2005
Applicants:
Jörn Liebich, Köln, DE;
Randolf Rolff, Kerpen, DE;
Ralf Kilian, Köln, DE;
Inventors:
Assignee:
Inficon GmbH, Cologne, DE;
Primary Examiner:
Int. Cl.
CPC ...
G01M 3/02 (2006.01); G01M 3/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
In leak detection, the signal generated by a test gas is superposed by interferences which fade as the vacuum generation in a container proceeds. Depending on the negative slope of the volume signal (MS), a lower indication limit (AG) is calculated. Upon activation of a zero function, the volume signal (MS) is not reduced to zero but only to the level of the indication limit (AG). Any exceeding of the indication limit is identified as a leak. Thus, the maximum sensitivity of the leak detection is guaranteed at any time.