Patents by Inventor Roelof Zuidema

Roelof Zuidema 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: 5478186
    Abstract: A device for collecting waste, in particular waste packing glass. At least one intake container and one collecting container is provided. The intake container has a lifting device for raising the intake container above the collecting container. The intake container has a bottom part and bottomless housing which is movable relative to the bottom part so that an open and closed position can be defined. In the closed position, a lower edge of the housing part lies against the bottom forming a seal and in the open position the lower edge of the housing is situated at a distance from the bottom part allowing discharge of the contents. The intake and collecting container can be aligned prior to discharge, thereby assuring error-free emptying of the intake container.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: December 26, 1995
    Assignee: Zuidema Milieu B.V.
    Inventor: Roelof Zuidema