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. 13, 2006
Filed:
Feb. 05, 2004
Armin Conrad, Herborn, DE;
Jörg Stanzel, Wetzlar, DE;
Armin Conrad, Herborn, DE;
Jörg Stanzel, Wetzlar, DE;
Pfeiffer Vacuum GmbH, Asslar, DE;
Abstract
A gas friction pump, comprising stationary pump-active components () and rotatable pump-active components () secured on a rotatable rotor shaft (), wherein the rotor shaft is supported with a bearing () at the high-vacuum-side end and a bearing arrangement at a fore-vacuum side end, characterized in that the high-vacuum side bearing is formed as a conventional bearing, and the fore-vacuum bearing arrangement contains at least one gas bearing. In an advantageous embodiment, the gas bearing is formed as a module and can be brought in engagement with a cylindrical portion of the housing and secured therein.