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:
Jul. 13, 1976
Filed:
Nov. 25, 1974
Applicant:
Inventor:
Werner Bachler, Hoffnungsthal, DT;
Assignee:
Leybold-Heraeus GmbH & Co. KG, Cologne, DT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ; F04D / ; F03B / ;
U.S. Cl.
CPC ...
417354 ; 417420 ; 417424 ; 415 90 ; 415112 ; 308-9 ;
Abstract
A turbomolecular vacuum pump has a stator, a rotor having a vertical axis of rotation and disposed in the stator; a drive motor for rotating the rotor; a downwardly open, axially extending chamber in the rotor; a vertically upwardly oriented, stationarily supported stub shaft projecting into the rotor chamber; and axial, as well as radial gas bearings disposed within the rotor chamber for generating gas cushions between the rotor and the stub shaft.