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:
Jan. 12, 2016
Filed:
Jun. 07, 2010
Applicants:
Thomas Dreifert, Kerpen, DE;
Wolfgang Giebmanns, Erftstadt, DE;
Robert Jenkins, Sussex, GB;
Roland Müller, Köln, DE;
Inventors:
Thomas Dreifert, Kerpen, DE;
Wolfgang Giebmanns, Erftstadt, DE;
Robert Jenkins, Sussex, GB;
Roland Müller, Köln, DE;
Assignee:
Oerlikon Leybold Vacuum GmbH, Cologne, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04C 29/00 (2006.01); F04C 29/04 (2006.01); F04C 18/16 (2006.01);
U.S. Cl.
CPC ...
F04C 29/047 (2013.01); F04C 18/16 (2013.01); F04C 2220/10 (2013.01); F04C 2240/30 (2013.01); F04C 2240/808 (2013.01);
Abstract
A vacuum pump comprises pumping elements arranged in a pumping chamber. An electric motor drives the pumping element. A frequency inverter is provided for changing the rotational speed of the electric motor. The frequency inverter is arranged in a frequency inverter housing immediately connected to the pump housing. An air cooler and a liquid cooler are arranged in the frequency inverter housing to cool the frequency inverter.