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:
Jun. 04, 1996
Filed:
Jun. 05, 1995
Applicant:
Inventors:
Helmut Bernhardt, Wetzlar, DE;
Rene Larsonneur, Wallisellen, CH;
Assignee:
Balzers Pfeiffer GmbH, Asslar, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D / ; F01D / ;
U.S. Cl.
CPC ...
415 14000 ; 415 90 ; 415229 ; 310 905 ;
Abstract
A venting arrangement for a magnetically supported vacuum pump which has a high speed rotor, wherein the load carrying capacity of the axial magnetic bearing is increased in the course of the venting process by reducing the gap between the axial support disk and the axial magnet in order to carry the additional forces caused by the venting process. In normal operation, the gap is adjusted to an upper limit value.