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:
Aug. 15, 2006
Filed:
Sep. 28, 2001
Heinrich Engländer, Linnich, DE;
Peter Klingner, Köln, DE;
Ingo Seckel, Bornheim, DE;
Leybold Vakuum GmbH, Cologne, DE;
Abstract
A side channel pump, preferably a vacuum pump, includes a driven rotor () and a fixed stator (). The rotor () and the stator () define a pump channel circulating in a peripheral direction. Blades are fixed onto the rotor, protruding into the cross-section of the pump channel. The pump channel also includes a blade-free side channel (). The pump channel () containing the side channel () extends in a helical manner around the rotor (). The pump channel is advantageously not limited to the length of a winding but can have the length of substantially any number of uninterrupted windings. As a result, a high suction performance and a high compression ratio in the pump can be obtained.