Patents by Inventor Frederik E. Heuckelbach

Frederik E. Heuckelbach 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).

  • Repair plug for heat exchanger tubes, especially for steam generators of pressurized-weather nuclear power plants
    Patent number: 4425944
    Abstract: Repair plug for sealing heat exchanger tubes, including a closure plug part being tightly connectable to a heat exchanger tube and having an end for insertion into the heat exchanger tube, and a polisher plug part disposed on the insertion end of the closure plug part axially in front of the insertion end in insertion direction thereof forming a single structural unit with the closure plug part, the polisher plug part remaining in the sealed heat exchanger tube after completing the tight connection.
    Type: Grant
    Filed: November 13, 1981
    Date of Patent: January 17, 1984
    Assignee: Kraftwerk Union Aktiengesellschaft
    Inventors: Frederik E. Heuckelbach, Robert Weber, Jakob Weber