Patents by Inventor Donald Yaffee

Donald Yaffee 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).

  • False tooth assembly for generator stator core
    Patent number: 10868456
    Abstract: A false tooth assembly for a generator stator core is presented. The false tooth assembly has a tapered shape including multiple tapered false tooth pieces. The multiple tapered false tooth pieces are installed into a damaged area in a tooth of a lamination of the stator core such that a wide end of the false tooth assembly is disposed into a wide opening of the damaged area and a narrow end of the false tooth assembly is flushed with a narrow opening of the damaged area at a tip of the tooth. The tapered shape of the false tooth assembly enables the false tooth assembly to fill the entire damaged area and to lock the false tooth assembly into the damaged area. The false tooth assembly can be used to repair stator core in any region of the stator core including step iron region without being dislodged during generator operation.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: December 15, 2020
    Assignee: SIEMENS ENERGY, INC.
    Inventors: Shane Bell, Randy Edward Whitener, Donald Yaffee
  • FALSE TOOTH ASSEMBLY FOR GENERATOR STATOR CORE
    Publication number: 20190372429
    Abstract: A false tooth assembly for a generator stator core is presented. The false tooth assembly has a tapered shape including multiple tapered false tooth pieces. The multiple tapered false tooth pieces are installed into a damaged area in a tooth of a lamination of the stator core such that a wide end of the false tooth assembly is disposed into a wide opening of the damaged area and a narrow end of the false tooth assembly is flushed with a narrow opening of the damaged area at a tip of the tooth. The tapered shape of the false tooth assembly enables the false tooth assembly to fill the entire damaged area and to lock the false tooth assembly into the damaged area. The false tooth assembly can be used to repair stator core in any region of the stator core including step iron region without being dislodged during generator operation.
    Type: Application
    Filed: May 31, 2018
    Publication date: December 5, 2019
    Inventors: Shane Bell, Randy Edward Whitener, Donald Yaffee
  • Vibrational control system for stator coils
    Patent number: 5798595
    Abstract: A vibrational control system for the coils of a stator includes a coil support bracket affixed to the stator, a coil support brace mounted on the coil support bracket with a shim arranged between the coil support brace and the coil support bracket, a push block arranged between the coils and the coil support brace, and control structure for controlling the vibrations of the stator coils.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: August 25, 1998
    Assignee: Westinghouse Electric Corporation
    Inventors: Lennart S. Nilsson, Charles M. Rowe, Donald Yaffee