Patents by Inventor Leon E. Weisbord

Leon E. Weisbord 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).

  • Hysteresis synchronous motor utilizing polarized rotor
    Patent number: 4433260
    Abstract: A hysteresis synchronous motor in which a rotor includes arcuate permanent magnets mounted adjacent to the hysteresis ring material. Permanent magnetic poles are induced in the ring material by the rotating electromagnetic stator field. After start-up, the rotor remains synchronized with the rotating field due to the mutual attraction of opposite magnetic poles.
    Type: Grant
    Filed: October 12, 1982
    Date of Patent: February 21, 1984
    Assignee: The Singer Company
    Inventors: Leon E. Weisbord, Francis W. Wessbecher