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. 21, 2010
Filed:
Dec. 12, 2007
Applicant:
Juergen Wagner, Mueschenbach, DE;
Inventor:
Juergen Wagner, Mueschenbach, DE;
Assignee:
Pfeiffer Vacuum GmbH, Asslar, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03C 2/00 (2006.01); F04C 2/00 (2006.01); F04C 23/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A lubricant-tight vane rotary vacuum pump includes at least one pump stage () having a safety valve () for controlling gas flow to the pump stage, a lubricant pump, a lubricant reservoir () at least partially surrounding the pump stage housing (), and a hydraulic conduit () connecting the lubricant pump outlet () with the safety valve (), with a pressurized lubricant flow through the hydraulic conduit () opening the safety valve (), and a channel () branching from the hydraulic conduit () for delivering a pressurized lubricant into the lubricant reservoir ().