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. 15, 2022
Filed:
Mar. 16, 2017
Applicant:
Leybold Gmbh, Cologne, DE;
Inventors:
Assignee:
LEYBOLD GMBH, Cologne, DE;
Primary Examiner:
Int. Cl.
CPC ...
F04C 29/06 (2006.01); F04C 29/12 (2006.01); F04D 19/04 (2006.01); F04D 17/12 (2006.01); F04C 11/00 (2006.01); F04C 25/02 (2006.01); F04C 23/00 (2006.01); F04C 18/12 (2006.01); F04B 53/00 (2006.01);
U.S. Cl.
CPC ...
F04C 25/02 (2013.01); F04C 29/061 (2013.01); F04C 29/068 (2013.01); F04C 29/12 (2013.01); F04B 53/001 (2013.01); F04C 18/123 (2013.01); F04C 18/126 (2013.01); F04C 23/001 (2013.01); F04C 29/065 (2013.01); F04C 2220/50 (2013.01); F04C 2250/101 (2013.01);
Abstract
A vacuum pump comprises rotor elements arranged in a suction chamber. An outlet duct is connected to an exhaust pipe. For the purpose of silencing, sound expansion spaces are provided in the outlet duct, which are integrated into the pump housing. Alternatively or in addition to these sound expansion spaces, sound expansion spaces may be provided in an inlet duct which is used for the inlet of gas ballast, said sound expansion spaces being preferably likewise integrated into the pump housing.