Patents by Inventor William E. Tomak

William E. Tomak 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).

  • Stator bars internally graded with conductive binder tape
    Patent number: 5723920
    Abstract: Stator bars for dynamoelectric machines are covered with an electrically conductive tape formed of a fabric support sheet carrying an electrically conductive polymeric binder system comprised of carbon particles dispersed in a polymeric matrix. The carbon particles are preferably selected from carbon black and/or graphite, and are present in the polymeric binder system in an amount of at least 5 percent by weight, based on the weight of the binder system. Low tip-up values of less than 0.025% and increased high voltage breakdown strengths of at least 700 VPM are obtained.
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: March 3, 1998
    Assignee: General Electric Company
    Inventors: Mark Markovitz, James J. Grant, William E. Tomak
  • Internal grading of generator stator bars with electrically conducting thermoplastic paints
    Patent number: 5623174
    Abstract: High voltage generator stator bar for electrical generators internally graded with a fast drying, electrically conductive, carbon-filled thermoplastic paint composition exhibit improved electrical dissipation factor tip-up values.
    Type: Grant
    Filed: December 8, 1995
    Date of Patent: April 22, 1997
    Assignee: General Electric Co.
    Inventors: Mark Markovitz, James J. Grant, William E. Tomak
  • Copper bonding epoxy resin compositions, resin coated copper articles and method
    Patent number: 5350815
    Abstract: A bare copper conductor is provided with a tenaciously adhering epoxy resin by heating and curing in situ on the conductor a coating of a solution of cycloaliphatic epoxy resin, a hardener, stannous octoate as a catalyst, and a phenolic accelerator.
    Type: Grant
    Filed: May 21, 1993
    Date of Patent: September 27, 1994
    Assignee: General Electric Company
    Inventors: Mark Markovitz, William E. Tomak