Patents by Inventor Radu-Stefan Dragan

Radu-Stefan Dragan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240235360
    Abstract: A magnetic geared rotating machine includes: a stator; a rotor including a plurality of rotor magnets; and a magnetic pole piece rotor including a plurality of magnetic pole pieces each disposed at a radial position between the stator and the rotor. Each of the magnetic pole pieces has a magnetic pole piece end face facing one side in an axial direction. Each of the rotor magnets has a rotor magnet end face facing the one side. At least part of the magnetic pole piece end face is located on the other side in the axial direction relative to the rotor magnet end face, or a finger end face, of each of a plurality of fingers, facing the one side is located on the other side relative to a tooth end face, of a tooth of the stator, facing the one side, the plurality of fingers being configured to hold therebetween a stator magnet disposed on the tooth from both sides in a circumferential direction.
    Type: Application
    Filed: August 12, 2022
    Publication date: July 11, 2024
    Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., MAGNOMATICS LIMITED
    Inventors: Takeshi IKEMI, Ryoji OKABE, Takatoshi MATSUSHITA, Mikito SASAKI, Stuart CALVERLEY, David POWELL, Glynn COOKE, Radu-Stefan DRAGAN
  • Publication number: 20240106314
    Abstract: The present disclosure relates to a magnetically geared apparatus. In an example the magnetically geared comprises: a first mover comprising a plurality of first permanent magnets; a stator; a second mover; and a flux shield aligned with the first plurality of permanent magnets for attenuating magnetic flux. One of the stator and the second mover comprises a plurality of pole pieces and is positioned between the first mover and the other of the stator and the second mover. The first mover, the stator and the second mover are aligned in a first direction, and wherein the flux shield is spaced from the plurality of first permanent magnets in a second direction perpendicular to the first direction by a nonmagnetic region, thereby attenuating magnetic flux in the second direction.
    Type: Application
    Filed: December 4, 2023
    Publication date: March 28, 2024
    Inventors: Glynn COOKE, Radu-Stefan DRAGAN, David POWELL, Gregg WILSON, Stuart CALVERLEY
  • Patent number: 10978942
    Abstract: A magnetically geared apparatus that includes a first rotor and a stator. The stator can include windings and a first plurality of permanent magnets, where the first plurality of permanent magnets are located between the windings and the first rotor. The stator can also include un-magnetized magnetisable material between circumferentially juxtaposed permanent magnets of the first plurality of permanent magnets.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: April 13, 2021
    Assignee: Magnomatics Limited
    Inventors: David Powell, Gregg Wilson, Ferran Garcia Daras, Radu-Stefan Dragan
  • Publication number: 20190157962
    Abstract: A magnetically geared apparatus comprising: a first rotor; and a stator comprising windings and a first plurality of permanent magnets, the first plurality of permanent magnets being located between the windings and the first rotor; the stator comprising un-magnetised magnetisable material between circumferentially juxtaposed permanent magnets of the first plurality of permanent magnets.
    Type: Application
    Filed: January 5, 2017
    Publication date: May 23, 2019
    Inventors: David Powell, Gregg Wilson, Ferran Garcia, Radu-Stefan Dragan