Patents by Inventor Ramakrishnan Raja Venkitasubramony

Ramakrishnan Raja Venkitasubramony 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).

  • Permanent magnet electric motor
    Publication number: 20080024028
    Abstract: An electric motor for reducing torque ripple includes a rotor, a plurality of magnets positioned about the rotor, and a stator including a plurality of stator teeth configured to form at least two slot openings each having a slot opening width wo and a slot opening height ho. One or more of the stator teeth include a dummy channel having a channel height wn and a channel width wb. At least one of the slot opening width wo, the slot opening height ho, the channel height wn, and the channel width wb, are selected so as to minimize or reduce cogging torque.
    Type: Application
    Filed: July 27, 2006
    Publication date: January 31, 2008
    Inventors: Mohammad S. Islam, Paul M. Fisher, Tomy Sebastian, Ramakrishnan Raja Venkitasubramony, Tom C. Wong