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:
May. 17, 1977
Filed:
Sep. 26, 1974
Applicant:
Inventors:
Werner Bachler, Hoffnungsthal, DT;
Rudiger Frank, Cologne, DT;
Helmut Habermann, Foret de Vernon Pa, FR;
Maurice Brunet, Vernon, FR;
Assignees:
Leybold-Heraeus GmbH & Co. KG, Cologne-Bayental, DT;
Societe de Propulsion-S.E.P., Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ; F03B / ;
U.S. Cl.
CPC ...
417354 ; 417424 ; 417372 ; 415 90 ;
Abstract
A turbomolecular vacuum pump has a housing, a vertically oriented hollow pump rotor situated in the housing, and a vertically upwardly oriented stub shaft affixed to the housing and extending into the hollow pump rotor. The pump rotor is supported on the stub shaft by a magnetic axial bearing and at least one magnetic radial bearing, all disposed in the space surrounded by the hollow pump rotor.