Patents by Inventor John E. Barrath

John E. Barrath 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).

  • Engine coolant thermostat with overtemperature protection
    Patent number: 5961037
    Abstract: An engine coolant thermostat of the type having a thermally expansible wax power element acting against a diaphragm and piston to move a poppet. The poppet has a retainer attached thereto which has portions sliding in slots on the thermostat housing; and these portions contact the ends of the slots to limit piston travel in the event of exposure to overtemperature and prevent failure of the thermostat.
    Type: Grant
    Filed: April 30, 1998
    Date of Patent: October 5, 1999
    Assignee: Eaton Corporation
    Inventors: Robert L. Fiedler, Richard L. Elkin, William R. Brooks, John E. Barrath