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:
Mar. 31, 2020
Filed:
Feb. 25, 2011
Thomas Wagner, Schwaebisch Hall, DE;
Francisco Rojo, St. Georgen, DE;
Thomas Wagner, Schwaebisch Hall, DE;
Francisco Rojo, St. Georgen, DE;
ebm-papst St. Georgen GmbH & Co. KG, St. Georgen, DE;
Abstract
A fan has an electronically commutated external-rotor motor serving to drive it. The motor has an internal stator () having a stator lamination stack () and a winding arrangement () associated with the stack. The internal stator has a central opening () for journaling a shaft (). The fan further has a permanent-magnet rotor () separated from the internal stator () by a magnetically effective air gap (). The internal stator () has a plastic coating () that surrounds the stator windings, forms a bearing tube for journaling the shaft (), and defines a wall element (), implemented integrally with the plastic coating (), forming a compartment or cavity () for electrical components () of the motor. The plastic coating, bearing tube and compartment are preferably molded in a single working step.