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:
Mar. 05, 2019
Filed:
Sep. 11, 2014
Oerlikon Leybold Vacuum Gmbh, Köln, DE;
Rainer Hölzer, Hürth, DE;
LEYBOLD GMBH, Köln, DE;
Abstract
A vacuum pump comprises a rotor shaft, which bears one or more rotor elements. The rotor shaft is driven by an electrical driver. A stator is arranged between the rotor elements. The rotor shaft is supported by bearings. The highly heat-generating components such as the driver and the stator are connected to a second housing part in particular by means of a support member. Heat-sensitive components such as the bearing are supported by means of a separate first housing part. The two housing parts can be kept at different temperatures, for example by means of separate cooling devices. Thus, the operating temperature of the in particular pressure-side bearing can be reduced, and therefore the service life can be extended.