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. 28, 2005
Filed:
Nov. 15, 2001
Christian Beyer, Köln, DE;
Heinz Engländer, Linnich, DE;
Peter Klingner, Köln, DE;
Martin Laerbusch, Langerwehe, DE;
Christian Beyer, Köln, DE;
Heinz Engländer, Linnich, DE;
Peter Klingner, Köln, DE;
Martin Laerbusch, Langerwehe, DE;
Leybold Vakuum GmbH, Cologne, DE;
Abstract
A turbomolecular vacuum pump () has an inlet () and an outlet () and rotor and stator vanes (and), situated between the inlet and outlet. The rotor vanes () have front sides () and rear sides () in relation to the direction of rotation. At least a part of the rotor vanes () have a rear side () which is convex on the suction-side and concave on the delivery side. Alternately, at least part of the rotor vanes () have a front side (), which is concave on the suction side and convex on the delivery side.