Patents by Inventor Hans-Jürgen Achtzehn

Hans-Jürgen Achtzehn 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).

  • Device for inspecting plant parts located under water
    Patent number: 7131345
    Abstract: A device for inspecting submersed plant parts is particularly suited for ultrasonic inspection of screws in the core baffle of a nuclear reactor pressure vessel. The device includes a remote-controlled underwater vehicle that is provided at its end face with a carrier that can be pivoted about a pivot axis oriented parallel to the longitudinal central axis of the underwater vehicle, and is provided with a holding device for an inspection head that is arranged on the carrier spaced apart from the pivot axis.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: November 7, 2006
    Assignee: IntelligeNDT Systems & Services GmbH & Co. KG
    Inventors: Hans-Jürgen Achtzehn, Robert Staudigel