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:
Jun. 19, 2007
Filed:
May. 26, 2003
Steven-andrew Evans, Buehl, DE;
Susanne Evans, Buehl, DE;
Steven-Andrew Evans, Buehl, DE;
Susanne Evans, Buehl, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
An electrical machine, in particular a brushless synchronous motor has a stator () and a rotor () with salient poles () disposed distributed over its circumference, each of which poles has an enclosed permanent magnet () and a pole shoe () that extends radially outward from the permanent magnet and defines an air gap () between the stator () and rotor (). In order to achieve a low cogging torque and a low torque undulation, the pole shoes () are embodied as magnetically anisotropic, with a preferred direction of the greater magnetic conductivity extending parallel to the radial salient pole axis.