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:
Nov. 15, 2005
Filed:
Mar. 15, 2001
Manfred Behling, Köln, DE;
Lothar Brenner, Bad Münstereifel, DE;
Thomas Dreifert, Köln, DE;
Hartmut Kriehn, Köln, DE;
Klaus Rofall, Köln, DE;
Manfred Behling, Köln, DE;
Lothar Brenner, Bad Münstereifel, DE;
Thomas Dreifert, Köln, DE;
Hartmut Kriehn, Köln, DE;
Klaus Rofall, Köln, DE;
Leybold Vakuum GmbH, Cologne, DE;
Abstract
A vacuum pump () comprising a pump chamber casing () accommodating two co-operating rotors () which are respectively arranged on a shaft (). A bearing/gear chamber () is disposed adjacent to the pump chamber casing () in which the rotor shafts () are cantilevered and provided with a synchronisation gear (). A drive motor () whose drive shaft () extending parallel to the rotor shafts () and is provided with a drive gear (). A gear stage () is disposed between the drive shaft () and one of the rotor shafts (). In order to provide a machine of this type which can be embodied in a compact form, the drive gear () of the drive shaft () engages directly with a driven gear () on one of the rotor shafts (), forming the gear stage ().