Patents by Inventor Karl Heinz Illgner

Karl Heinz Illgner 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).

  • STRUCTURAL FIXING SYSTEM WITH HIGH CLAMPING FORCE AND TIGHTENING PRECISION WITH HIGH CORROSION RESISTANCE
    Publication number: 20100251661
    Abstract: A structural fixing system with high clamping force, tightening precision and high corrosion resistance, in particular for light and heavy metalwork elements, comprises a flanged metal bolt (10), and/or a flanged metal nut (20), obtained by hot or cold forming. In the space between the base of the flange (12) and the shank (13) of the bolt (10) or below the flange of the nut (20) is a precision collar with a smaller diameter than the diameter of the flange.
    Type: Application
    Filed: June 4, 2007
    Publication date: October 7, 2010
    Applicant: Societa' Bulloneria Europea S.B.E.S.P.A.
    Inventors: Karl Heinz Illgner, Federico Vescovini