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:
Feb. 14, 2017
Filed:
Sep. 02, 2014
Applicant:
Liebherr-elektronik Gmbh, Lindau, DE;
Inventors:
Assignee:
LIEBHERR-ELEKTRONIK GMBH, Lindau (Bodensee), DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/00 (2006.01); H02P 31/00 (2006.01); H02P 4/00 (2006.01); H02J 1/10 (2006.01); H02J 7/34 (2006.01); H02J 9/06 (2006.01); H02P 23/00 (2016.01); B60L 1/00 (2006.01); H02P 29/02 (2016.01); B60L 9/00 (2006.01); B60L 11/00 (2006.01); B60L 11/18 (2006.01);
U.S. Cl.
CPC ...
H02P 4/00 (2013.01); B60L 1/003 (2013.01); B60L 9/00 (2013.01); B60L 11/005 (2013.01); B60L 11/1868 (2013.01); H02J 1/10 (2013.01); H02J 7/34 (2013.01); H02J 7/345 (2013.01); H02J 9/06 (2013.01); H02P 23/00 (2013.01); H02P 29/025 (2013.01); B60L 2200/26 (2013.01); B60L 2210/10 (2013.01); B60L 2210/40 (2013.01); B60L 2220/50 (2013.01); B60L 2240/34 (2013.01); Y02T 10/642 (2013.01);
Abstract
The invention relates to a drive circuit for an electric motor having an aerodynamic bearing of the motor shaft, wherein the drive circuit comprises at least one storage means for storing electrical energy by which the electric motor can be fed with electrical energy on a failure of the supply voltage or DC-link voltage to obtain a minimum speed of the motor shaft required for the air support at least at times.