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. 30, 2006
Filed:
Sep. 21, 2001
Applicant:
Ekkehard Pittius, Roth, DE;
Inventor:
Ekkehard Pittius, Roth, DE;
Assignee:
Siemens Aktiengesellschaft, München, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 49/02 (2006.01); H02K 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Ventilation devices, in particular for electric motor drives regularly comprise a fan wheel (), which is driven by a shaft via an electromagnetic induction coupling. In order to reduce the complexity of manufacture, a stack of magnetic sheets () is cast in the aluminum hub of the fan wheel (). Thus, aluminum also assumes at the same time the function of a damper winding.