Patents by Inventor Leonardus Vos

Leonardus Vos 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 zigzag folding of strip material
    Patent number: 4008591
    Abstract: A device for zigzag folding of strip material and the like by means of two dies, the facing sides of which are provided with teeth. Each of the dies is provided with ducts which open into the toothed die face. During operation, the two duct systems are alternately connected to a source of a pressure, either higher or lower than atmospheric pressure, in order to keep the material alternately against one of the two toothed die faces during open die positions.
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: February 22, 1977
    Assignee: U.S. Philips Corporation
    Inventors: Leonardus Vos, Joannes Theodorus VAN DER Sanden, Adrianus Johannes Van Mensvoort