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:
Oct. 05, 2010
Filed:
Apr. 08, 2008
Reinhard Riedl, Finning, DE;
Thomas Pritzen, Inningen, DE;
Reinhard Riedl, Finning, DE;
Thomas Pritzen, Inningen, DE;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
A rotor () for a permanent magnet motor has a is rotatable around an axis of rotation (A) and has a plurality of axially extending permanent magnets () which are offset circumferentially in a symmetrical manner and arranged, respectively, in receptacles () of a yoke () which is assembled from axially stacked sheet lamellas (), with the sheet lamellas () each having a coaxial inner hole (), at least a first recess () which is open toward the inner hole (), and one second recess () which is closed toward the inner hole (), and with the lamellas being formed in a rotationally symmetrical manner so as to be offset at least by a phase angle, with at least two sheet lamellas () being oriented so as to be offset relative to one another by half of the phase angle.