Patents by Inventor Dieter Mathieu

Dieter Mathieu 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: 6799961
    Abstract: The application relates to a device for adjusting the gap of a die arrangement using a thermopin, which is connected to the die lip (10) without any play by means of a clamp-type socket (7), where the clamp-type socket (7) engages on the one had in a lip nose (11) and on the other hand in a groove (5) of the thermopin (1), where the lip nose (11) is an integral part of the die lip (10) and the clamp-type socket (7) has a bore (8), and the thermopin (1) has a bore (4) and a fixing means is passed through the bores (8) and (4).
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: October 5, 2004
    Assignee: Trespaphan GmbH
    Inventors: Albrecht Freynhofer, Helmut Kremp, Dieter Mathieu, Wolfgang Rasp
  • Patent number: 6704978
    Abstract: The present invention relates to a method for guiding a flat web of material (1) in which the web of material (1) runs in an arrangement of rotating rollers at a web speed vF. The web of material is guided in its peripheral region via a spreader roll (2) which produces a tensile stress in the transverse direction, i.e. crosswise relative to the machine direction of the web of material (1), wherein this tension in the transverse direction is controlled by means of closed-loop control of the circumferential speed vR of the spreader roll (2) and/or by open-loop control of the cant angle &agr; and/or of the wrap angle &bgr; between the surface of the spreader roll (3) and the web of material (1) and wherein the circumferential speed vR is greater than the web speed vF.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: March 16, 2004
    Assignee: Trespaphan GmbH
    Inventors: Dieter Mathieu, Wolfgang Rasp
  • Patent number: 6189825
    Abstract: In a method and apparatus for controlling the winding density of film rolls, a desired and an actual winding density of a film roll are determined and compared with one another. The quantity obtained from the comparison is multiplied by an adapting or damping factor &agr;, and the control output resulting therefrom is adapted to the film contact pressure and the film pull. The values thus obtained are fed as manipulated variables to a contact pressure actuator and a pull actuator for the film.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: February 20, 2001
    Assignee: Hoechst Trespaphan GmbH
    Inventors: Dieter Mathieu, Robert Schmidt