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:
May. 12, 2020
Filed:
Jun. 02, 2017
Applicant:
Leybold Gmbh, Köln, DE;
Inventors:
Markus Liessmann, Dormagen, DE;
Sebastian Walzel, Unna, DE;
Assignee:
Leyold GmbH, Cologne, DE;
Primary Examiner:
Int. Cl.
CPC ...
F04D 13/06 (2006.01); H02P 27/04 (2016.01); F04D 19/04 (2006.01); F04D 25/06 (2006.01);
U.S. Cl.
CPC ...
F04D 13/0693 (2013.01); F04D 19/04 (2013.01); F04D 25/068 (2013.01); F04D 25/0693 (2013.01); H02P 27/047 (2013.01);
Abstract
A vacuum pump drive having an electric motor and a frequency converterelectrically connected to the electric motor and arranged at a distance to the motor, wherein in the electric feed line from the frequency converter to the electric motor a transformer in the form of a transmitter of ferrite or sinter material is arranged.