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:
Aug. 30, 2022
Filed:
Sep. 24, 2018
Applicant:
Pfeiffer Vacuum, Annecy, FR;
Inventors:
Julien Coulomb, Saint Pierre en Faucigny, FR;
Cyrille Nomine, Epagny, FR;
Assignee:
PFEIFFER VACUUM, Annecy, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01M 3/22 (2006.01); F04D 19/04 (2006.01); F04D 25/16 (2006.01); G01M 3/20 (2006.01); F04B 23/04 (2006.01); F04B 37/14 (2006.01); F04B 41/06 (2006.01);
U.S. Cl.
CPC ...
G01M 3/223 (2013.01); F04B 23/04 (2013.01); F04B 37/14 (2013.01); F04D 19/04 (2013.01); F04D 19/042 (2013.01); F04D 25/16 (2013.01); G01M 3/205 (2013.01); F04B 41/06 (2013.01);
Abstract
A leak detector for checking the sealing tightness of an object to be tested includes a detection inlet to be connected to the object, a first pumping device, and a gas detector. The first pumping device includes a first rough vacuum pump, at least one second rough vacuum pump, and a turbomolecular pump. The gas detector is connected to the turbomolecular pump. The outlet of the at least one second rough vacuum pump is connected to the first rough vacuum pump, between two in-series pumping stages of the first rough vacuum pump.