Patents by Inventor Robert L. Alfieri

Robert L. Alfieri 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).

  • Electrically braked alternating current motor with plural, alternatively energizable brake windings
    Patent number: 4217532
    Abstract: An electrically braked alternating current motor includes a first, or primary, brake winding that is normally energizable to brake the motor and at least a second, or backup, brake winding that is alternatively energizable with the first brake winding to electrically brake the motor if the first brake winding fails.
    Type: Grant
    Filed: February 15, 1978
    Date of Patent: August 12, 1980
    Inventors: Robert L. Alfieri, James D. Grice, William D. Greene