Patents by Inventor Frank Fingerhut

Frank Fingerhut 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).

  • Patent number: 6167983
    Abstract: A process for production of a tube profile element having a swaged closed head end includes the steps of chamfering an unswaged end of a tube profile element having a first diameter to provide a chamfered end on the tube profile element having a chamfer angle of less than 45° relative to a longitudinal axis of the end portion of the tube profile element, supporting the tube profile element in a retaining tool such that an end portion of the tube profile element having the unswaged chamfered end thereon extends beyond the retaining tool, providing a swage tool having a negative die capable of swaging the end portion of the tube into a swaged closed head end having a maximum second diameter larger the first diameter of the unswaged end of the tube, and moving the swage tool toward the end portion of the tube and swaging the unswaged chamfered end of the tube, by the negative die of the swage tool, into the swaged closed head end of the tube profile element.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: January 2, 2001
    Assignee: W. Lottgers GmbH & Co. KG
    Inventors: Horst Wunderlich, Frank Fingerhut