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:
Jun. 06, 2023
Filed:
Jul. 07, 2020
Applicant:
Pfeiffer Vacuum Gmbh, Asslar, DE;
Inventor:
Steffen Herrmann, Lohra, DE;
Assignee:
PFEIFFER VACUUM GMBH, Asslar, DE;
Primary Examiner:
Int. Cl.
CPC ...
F04C 25/02 (2006.01); F04C 29/02 (2006.01); B01D 3/10 (2006.01); F04B 39/16 (2006.01); F04B 53/04 (2006.01); F04C 27/00 (2006.01);
U.S. Cl.
CPC ...
F04C 25/02 (2013.01); B01D 3/106 (2013.01); F04B 39/16 (2013.01); F04B 53/04 (2013.01); F04C 29/026 (2013.01); F04C 27/001 (2013.01);
Abstract
A vacuum device, in particular to a vacuum pump, includes a reservoir for an operating medium; an outlet connector arranged at or in the reservoir; and a selection device that selectively closes or opens the outlet connector or an outlet line, which is connected via the outlet connector to the reservoir, in dependence on whether the operating medium or water is present at the outlet connector.