Patents by Inventor Gary E. Stemler

Gary E. Stemler 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).

  • Self-monitoring high voltage transmission line suspension insulator
    Patent number: 4291193
    Abstract: A high voltage transmission line suspension insulator (18 or 22) which monitors its own dielectric integrity. A dielectric rod (10) has one larger diameter end fitting attachable to a transmission line and another larger diameter end fitting attachable to a support tower. The rod is enclosed in a dielectric tube (14) which is hermetically sealed to the rod's end fittings such that a liquidtight space (20) is formed between the rod and the tube. A pressurized dielectric liquid is placed within that space. A discoloring dye placed within this space is used to detect the loss of the pressurized liquid.
    Type: Grant
    Filed: May 9, 1980
    Date of Patent: September 22, 1981
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Gary E. Stemler, Donald N. Scott