Patents by Inventor Friedrich Huls

Friedrich Huls 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).

  • Method for rolling tubes
    Patent number: 4033164
    Abstract: Tubular billets are stretch-rolled in that the rolls of locations closer to the entrance have the speeds reduced temporarily from their respective normal operation speed by an amount, which is made dependent upon the mean longitudinal tension in the billet during rolling.
    Type: Grant
    Filed: August 28, 1975
    Date of Patent: July 5, 1977
    Assignee: Mannesmannrohren-Werke AG
    Inventors: Horst Biller, Friedrich Huls