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:
Jan. 06, 2015
Filed:
Feb. 23, 2010
Christian Beyer, Cologne, DE;
Markus Henry, Cologne, DE;
Heinz Englaender, Linnich, DE;
Oerlikon Leybold Vacuum GmbH, Cologne, DE;
Abstract
A multi-inlet vacuum pump includes a first pump device () including a first rotor element () with a plurality of first rotor disks () serially arranged in the conveying direction (), and a second pump device () including a further rotor element () with a plurality of second rotor disks () serially arranged in the conveying direction (). A diameter of the second rotor disks () is at least partially larger than a diameter of the first rotor disks (). A main inlet () sucks in a first fluid stream () with the first pump device (). The first fluid stream () is conveyed in the direction of the further pump device (). An intermediate inlet () sucks in a second fluid stream () with the second pump device (). The second fluid stream () is conveyed in the direction of a pump outlet. A process of merging the two fluid streams () will occur within the second pump device (), preferably between two adjacent second rotor disks () of the second pump device ().