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. 14, 2006
Filed:
Jan. 24, 2001
Applicant:
Heinrich Engländer, Linnich, DE;
Inventor:
Heinrich Engländer, Linnich, DE;
Assignee:
Leybold Vakuum GmbH, Cologne, DE;
Primary Examiner:
Int. Cl.
CPC ...
F01D 1/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
A friction vacuum pump () comprises a fixed element () bearing rows of stator blades () and a rotating element () bearing rows of rotor blades (). The rows of stator blades and rotor blades are arranged concentrically with respect to an axis of rotation () of the rotating element () and mesh with each other. In order to create in the axial direct a short friction pump, the elements () bearing the rows of rotor blades and stator blades extend in a substantially radial manner and the longitudinal axes of the blades () extend in a substantially axial manner.