Patents by Inventor Thilak Raj Durairaj

Thilak Raj Durairaj 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).

  • Reducing stress in electric-machine rotors by optimizing holes
    Patent number: 9246363
    Abstract: A rotating electrical machine has a rotor composed of laminations having salient poles. The poles have one or more holes which are positioned so as to reduce the peak stress experienced by the laminations when the rotor is rotating. The holes are chosen according to a disclosed design procedure which gives a reduction in peak stress for a given limit on the output of the machine.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: January 26, 2016
    Assignee: NIDEC SR DRIVES, LTD
    Inventors: Phillip George Dickinson, Paul Andrew Sykes, Norman Neilson Fulton, Thilak Raj Durairaj
  • STRESS REDUCTION IN ELECTRICAL MACHINES
    Publication number: 20110285242
    Abstract: A rotating electrical machine has a rotor composed of laminations having salient poles. The poles have one or more holes which are positioned so as to reduce the peak stress experienced by the lamination when the rotor is rotating. The holes are chosen according to a disclosed design procedure which gives a reduction in peak stress for a given limit on the output of the machine.
    Type: Application
    Filed: May 11, 2011
    Publication date: November 24, 2011
    Applicant: NIDEC SR DRIVES LTD.
    Inventors: Phillip George Dickinson, Paul Andrew Sykes, Norman Neilson Fulton, Thilak Raj Durairaj