Patents by Inventor James EMBERTON

James EMBERTON 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).

  • Induction motor rotor and a method of manufacturing the same
    Patent number: 10951101
    Abstract: A method of manufacturing an induction motor rotor assembly, the method includes the steps of: providing a rotor; machining a plurality of re-entrant slots axially along an outer surface of the rotor; positioning a sleeve concentrically over the outer surface of the rotor; applying a friction stir welding process to the sleeve along each re-entrant slot axially along the outer surface of the rotor to cause the sleeve material to plasticise and flow into the axial re-entrant slot to form an axial re-entrant slot bar; and providing an electrical connection at each of the opposing axial ends of the rotor between respective ones of opposing ends of each of the axial re-entrant slot bars to thereby form the induction motor rotor.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: March 16, 2021
    Assignee: ROLLS-ROYCE plc
    Inventors: James Emberton, Alexis Lambourne, John J A Cullen
  • INDUCTION MOTOR ROTOR AND A METHOD OF MANUFACTURING THE SAME
    Publication number: 20170163135
    Abstract: A method of manufacturing an induction motor rotor assembly, the method includes the steps of: providing a rotor; machining a plurality of re-entrant slots axially along an outer surface of the rotor; positioning a sleeve concentrically over the outer surface of the rotor; applying a friction stir welding process to the sleeve along each re-entrant slot axially along the outer surface of the rotor to cause the sleeve material to plasticise and flow into the axial re-entrant slot to form an axial re-entrant slot bar; and providing an electrical connection at each of the opposing axial ends of the rotor between respective ones of opposing ends of each of the axial re-entrant slot bars to thereby form the induction motor rotor.
    Type: Application
    Filed: November 21, 2016
    Publication date: June 8, 2017
    Applicant: ROLLS-ROYCE plc
    Inventors: James EMBERTON, Alexis LAMBOURNE, John J A CULLEN