Patents by Inventor Michael Thull

Michael Thull 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 and device for longitudinal drawing of a film web
    Patent number: 7596839
    Abstract: The invention relates to a device for drawing a film web, made from a thermoplastic plastic, comprising at least one driven roller (2), driven at a speed V1 and at least one second driven roller (3), driven at a speed V2, where V1<V2. The rollers (2, 3) are serially arranged such that a drawing gap (4) is embodied between the two rollers (2, 3). A width-maintaining device is arranged in the drawing gap (4), which mechanically grips both edges of the film web such that the width of the film web is essentially maintained during the longitudinal drawing in the drawing gap (4). The invention further relates to a method for the longitudinal drawing of films which are drawn by means of said device.
    Type: Grant
    Filed: January 17, 2005
    Date of Patent: October 6, 2009
    Assignee: Treofan Germany GmbH & Co. KG
    Inventors: Detlef Busch, Albrecht Freynhofer, Gerhard Koch, Michael Thull
  • Method and device for longitudinal drawing of a film web
    Publication number: 20070157436
    Abstract: The invention relates to a device for drawing a film web, made from a thermoplastic plastic, comprising at least one driven roller (2), driven at a speed V1 and at least one second driven roller (3), driven at a speed V2, where V1<V2. The rollers (2, 3) are serially arranged such that a drawing gap (4) is embodied between the two rollers (2, 3). A width-maintaining device is arranged in the drawing gap (4), which mechanically grips both edges of the film web such that the width of the film web is essentially maintained during the longitudinal drawing in the drawing gap (4). The invention further relates to a method for the longitudinal drawing of films which are drawn by means of said device.
    Type: Application
    Filed: January 17, 2005
    Publication date: July 12, 2007
    Applicant: Treofan Germany GmbH & Co., KG
    Inventors: Detlef Busch, Albrecht Freynhofer, Gerhard Koch, Michael Thull