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:
Oct. 04, 2016
Filed:
Dec. 20, 2013
Applicant:
Dr. Ing. H.c. F. Porsche Aktiengesellschaft, Stuttgart, DE;
Inventor:
Werner Schiek, Jettingen, DE;
Assignee:
Dr. Ing. h.c. F. Porsche Aktiengesellschaft, Stuttgart, DE;
Primary Examiner:
Int. Cl.
CPC ...
H02K 9/06 (2006.01); H02K 5/20 (2006.01); H02K 9/19 (2006.01);
U.S. Cl.
CPC ...
H02K 9/06 (2013.01); H02K 5/20 (2013.01); H02K 11/21 (2016.01); H02K 9/19 (2013.01);
Abstract
The invention relates to an electric machine supplied with air for cooling purposes. The air is heated during operation of the electric machine and is removed in the form of exhaust air. The electric machine is equipped with a fan wheel () which is coupled to a rotor of the electric machine. To improve and to simplify the operation of the electric machine, the fan wheel () is designed as a precise steel part with a sensor device () for detecting a rotational speed of the fan wheel () and thereby detecting a rotational speed of the rotor.