Patents by Inventor Bert Van Den Bedem

Bert Van Den Bedem 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: 6502772
    Abstract: The invention relates to the chopping of thin webs, and notably to the chopping of edges trims of thin webs. It proposes a chopping device for thin webs, comprising an input section (10) for receiving the web to be chopped; an accelerating section (18) for accelerating the front end of the web received from the input section. Preferably, the device also comprises at least one puncturing means or knife (13) located between the input section and the accelerating section. The invention also relates to a process for chopping thin webs, comprising the steps of providing an incoming web and accelerating the front end of the incoming web so as to tear off said front end, e.g. by causing the web to contact a puncturing device.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: January 7, 2003
    Assignee: Dupont Teijin Films U.S. Limited Partnership
    Inventors: Heinz Kuhlmann, Bert Van Den Bedem
  • Patent number: 5417382
    Abstract: Apparatus for automatic high-speed winding of a continuous web of thin film-like material onto a core to form a wound roll, in which the film is applied by a train of idling lay-on rolls consisting of first and second rolls arranged parallel to the said core and which, in the production position are applied against the roll being wound by use of a pneumatic cylinder having a movable piston situated at each end of each roll and each acting on a respective pivoting arm one end of which carries a bearing on which the rolls are journaled and the other end of which pivots on a carriage that can be advanced and retracted along a guide path, enabling perfectly uniform wound rolls to be obtained.
    Type: Grant
    Filed: December 2, 1993
    Date of Patent: May 23, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Gilles Petitjean, Nicolas Rollinger, Bert Van Den Bedem, Jean-Luc Verheggen