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:
May. 20, 2025
Filed:
Jun. 16, 2023
Siemens Healthcare Gmbh, Erlangen, DE;
Thomas Weidinger, Erlangen, DE;
SIEMENS HEALTHINEERS AG, Forchheim, DE;
Abstract
A brushless drive system includes a reluctance rotor and a stator for generating a magnetic flux. The stator has a cylindrical stator yoke, an annular permanent magnet and a coil unit. The reluctance rotor has a cylindrical rotor yoke that is made of a soft-magnetic material, is free from magnetic sources and is configured to be driven about an axis of rotation via the magnetic flux. The permanent magnet and the coil unit are axially spaced apart along the axis of rotation. The stator yoke, the permanent magnet, the rotor yoke and the coil unit form a magnetic circuit for guidance of the magnetic flux. The magnetic circuit is configured such that, between the permanent magnet and the coil unit, an axial direction of the magnetic circuit in the stator yoke and an axial direction of the magnetic circuit in the rotor yoke have opposite signs.