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:
Apr. 11, 2017
Filed:
Sep. 12, 2012
Reinhard Stillger, Öhringen, DE;
Christian Pfaff, Künzelsau, DE;
Jens Krotsch, Niederstetten, DE;
Martin Baun, Mulfingen, DE;
Martin Baer, Mulfingen, DE;
Tobias Ehmann, Neuenstein, DE;
Mark Heinze, Rot am See, DE;
Reinhold Gerner, Ravenstein, DE;
Christian Hammel, Pfedelbach-Oberohrn, DE;
Reinhard Stillger, Öhringen, DE;
Christian Pfaff, Künzelsau, DE;
Jens Krotsch, Niederstetten, DE;
Martin Baun, Mulfingen, DE;
Martin Baer, Mulfingen, DE;
Tobias Ehmann, Neuenstein, DE;
Mark Heinze, Rot am See, DE;
Reinhold Gerner, Ravenstein, DE;
Christian Hammel, Pfedelbach-Oberohrn, DE;
EBM-PAPST MULFINGEN GMBH & CO. KG, Mulfingen, DE;
Abstract
A rotating electric machine () having a stator () in a housing () and a rotor () supported by a shaft (). The housing () circumferential wall () and first and second axially opposing end walls () support bearing flanges with bearings () for the shaft (). Two cooling fan impellers () are connected to the shaft (). An inner cooling fan impeller () positioned inside the housing () generates an inner cooling air circuit (A) inside the housing (). An outer cooling fan impeller () provided outside the housing (), generates an outer cooling air flow (B). The first end wall () is formed with a thermal conductivity of at least a specified value and has an outer cooling rib geometry () on its outer side facing the outer cooling fan impeller (), and an inner cooling rib geometry () on its opposing inner side.