Patents by Inventor Ludwig Rohrl

Ludwig Rohrl 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 forming a coaxial corrugation in a thin-walled tube
    Patent number: 4742707
    Abstract: For the production of coaxial corrugations in the walls of thin-walled tubes with very tight tolerances, the invention provides a device having jaws adapted to be moved equally in opposite directions and which press against the ends of the tube so as to have a corrugation formed therein so as to feed the tube wall axially towards the corrugation in the process of being generated. The jaws are moved by means of a central lead screw with screw threads of opposite hand.
    Type: Grant
    Filed: February 19, 1987
    Date of Patent: May 10, 1988
    Assignee: MAN Technologie GmbH
    Inventors: Maximilian Hammer, Johann Munich, Ludwig Rohrl