Patents by Inventor Uwe Kohn

Uwe Kohn 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 transverse cutting and welding of webs
    Patent number: 5112289
    Abstract: In a device for transversely welding and cutting tubular film into bags, feed rolls advance the film to a gripping rail which grips the leading end of the film during operation of cutting and welding devices located behind the gripping rail in the direction of feed. To ensure proper tensioning of the film, the feed rollers are reversed after the film is gripped and prior to operation of the cutting and welding devices.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: May 12, 1992
    Assignee: Windmoller & Holscher
    Inventor: Uwe Kohn