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. 23, 2007
Filed:
Feb. 11, 2004
Applicants:
Andreas Ewert, Lichtenau, DE;
Markus Liedel, Pegnitz, DE;
William Stevens, Maynard, MA (US);
Inventors:
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 5/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
An external rotor motor is disclosed, which features a stator () and a rotor () surrounding the stator () while leaving an air gap. A damper () made of an elastic material is arranged on the outside of the rotor () in order to dampen resonant rises in airborne sound, which is emitted by the rotor of the external rotor motor and by an assembly coupled to it. In the case of a rotor () that is designed to be pot-shaped, the damper () is preferably embodied as a damping cap (), which surrounds the pot jacket () and at least partially covers the pot base () ().