Patents by Inventor Karl Meurer

Karl Meurer 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: 4046603
    Abstract: The process for the continuous hardening of tubes comprises helically advancing a plurality of tubes arranged end to end in a horizontal direction and externally heating said tubes. A further step includes simultaneously or successively heating internally the said tubes and subsequently cooling said tubes both externally and internally. A further step includes temporarily accelerating the feeding of said tubes to divide the substantially continuous line of tubes into individual tubes. An additional step before externally and internally heating the tubes includes preheating said tubes to a temperature in the range of 500.degree. to 600.degree. C. Apparatus for the continuous hardening of tubes includes a roller table for the longitudinal helical transport of the tubes arranged end to end. An external heat source is provided for heating the tubes and an external spraying ring is arranged axially in advance of the heat source for the external cooling of the tubes.
    Type: Grant
    Filed: July 2, 1975
    Date of Patent: September 6, 1977
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Helmut Landgraf, Herbert Forster, Karl Meurer