Patents by Inventor Steven L. Thomas

Steven L. Thomas 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).

  • Residual magnetism reversing circuit for an electromagnetic clutch
    Patent number: 4318155
    Abstract: Residual magnetism in the engageable members of an electromagnetic clutch is relieved following deenergization of the clutch coil by charging a capacitor with the inductive energy stored in the coil at deenergization thereof and subsequently discharging the capacitor into the coil in a direction opposite to that applied to the coil during energization.
    Type: Grant
    Filed: June 20, 1980
    Date of Patent: March 2, 1982
    Assignee: General Motors Corporation
    Inventor: Steven L. Thomas