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:
Nov. 30, 2004
Filed:
Aug. 27, 2002
Applicant:
Inventor:
Jorg Stanzel, Wetzlar, DE;
Assignee:
Pfeiffer Vacuum GmbH, Asslar, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 1/100 ; F01D 2/508 ; F01D 2/516 ; F01D 2/518 ; F04D 2/958 ;
U.S. Cl.
CPC ...
F01D 1/100 ; F01D 2/508 ; F01D 2/516 ; F01D 2/518 ; F04D 2/958 ;
Abstract
A turbomolecular pump including a housing having a suction opening and a gas outlet opening, and a plurality of alternatingly arranged one behind another, stator and stator rings provided, respectively with support rings for supporting each a blade, with a support ring of a stator disc located adjacent to a high pressure region of the turbomolecular pump being connected with an adjacent housing part over a large surface or being formed with the adjacent housing part as one-piece part.