Patents by Inventor Donald J. Stonkus

Donald J. Stonkus 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).

  • Loadbreak bushing and snuffer/contact assembly therefor
    Patent number: 4516823
    Abstract: In a gas-actuated loadbreak bushing having an axially displaceable snuffer/contact assembly, the assembly is provided with radial lockout means in the form of gas-actuated radial pistons which, when actuated in response to a fault closure, interfere with an end abutment lip of the bushing housing so as to prevent resetting of the bushing thereby indicating to the lineman a need to replace the bushing and so eliminating the risk of having the bushing subjected to repeated fault closure.
    Type: Grant
    Filed: December 7, 1983
    Date of Patent: May 14, 1985
    Inventors: Reinhard Filter, Donald J. Stonkus