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:
Dec. 12, 2017
Filed:
May. 18, 2012
Applicants:
Gerhard Wilhelm Walter, Cologne, DE;
Guenter Holstein, Cologne, DE;
Christian Beyer, Cologne, DE;
Inventors:
Assignee:
LEYBOLD GMBH, Köln, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01M 3/04 (2006.01); G01M 3/02 (2006.01); G01M 3/20 (2006.01);
U.S. Cl.
CPC ...
G01M 3/02 (2013.01); G01M 3/202 (2013.01);
Abstract
A leak detection device has a test chamber which, for evacuation, is connected to an evacuation pump device. Moreover, the test chamber is connected by a test gas line to a test gas pump device. The test gas pump device is connected, at its main inlet, to a test gas detector, such that a detection of test gas can take place using the counter-current principle. A valve device is arranged in the test gas line. This valve device has a test gas chamber for temporary storage of test gas removed from the test chamber.