Patents by Inventor Joerg Appi

Joerg Appi 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).

  • Publication number: 20130303293
    Abstract: A method for the production of torque-limited fastening devices, which each have a first head element with a contact for a fastening tool, and a second head element that is joined to the first head element via a welded joint that shears off at a predefined limit torque, said method providing a plurality of first head elements and second head elements having the same geometry, and in each case, a first head element and a second head element are welded together in a welding process that creates the welded joint. At least two welding processes are carried out employing at least one different welding parameter, so that different limit torques can be obtained for parts having the same geometry. A fastening device on a concrete anchor.
    Type: Application
    Filed: August 23, 2011
    Publication date: November 14, 2013
    Applicant: Hilti Aktiengesellschaft
    Inventors: Andreas Eckstein, Mathias Goldt, Marc Schaeffer, Joerg Appi, Arjen Detmer Dijkhuis