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:
Nov. 25, 2014
Filed:
Feb. 03, 2012
Herbert Wallner, Schönaich, DE;
Herbert Wallner, Schönaich, DE;
Dr. Fritz Faulhaber GmbH & Co. KG, Schonaich, DE;
Abstract
A miniature electric motor () with an outer diameter (D) that is smaller than or equal to 6 mm, has a hollow cylindrical stator () with stator coils () and a magnetic rotor () rotatably arranged around a rotational axis () in the stator () by means of a rotor shaft (). The stator coils () can be energized in order to generate a magnetic rotational field in dependence upon the rotational position of the magnetic rotor (). A sensor chip () having at least one magnetic field sensor () is arranged in such a manner in an area axially adjacent to a front face of the magnetic rotor () located within a plane that is vertical to the rotational axis () that the magnetic field sensor () is impinged in such a way by the magnetic field that the rotational position of the rotor can be evaluated.