Patents by Inventor Klaas Willem De Groot

Klaas Willem De Groot 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: 6494149
    Abstract: A construction, such as a pallet, provided inter alia with plate-like components of nailable material, for instance of wood and/or wood fibers, plastic and the like which are pressed together with glue under pressure and/or with addition of heat, wherein at least two plate-like elements, each of random thickness, are joined together on the mutually facing surfaces using one or more, whether or not spatial nail elements, in order to increase the carrying capacity of the pallet construction. If desired the space between the deck plates can be filled with a material of a low specific gravity, like foam.
    Type: Grant
    Filed: May 2, 2000
    Date of Patent: December 17, 2002
    Inventor: Klaas Willem De Groot
  • Patent number: 5924830
    Abstract: Method for the manufacture of a nail element comprising a plate-shaped body and one or more elongate elements whereby in accordance with the invention in each case at least one elongate elements is set at an angle relative to the face of the plate-shaped body and brought into contact with it, whereupon heat, for example from electric resistance welding, is generated at the point of contact for melting the material of the elongate elements and the plate-shaped body in order to weld these to each other, so that a nail element may be obtained in a simple manner and inexpensively.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: July 20, 1999
    Inventor: Klaas Willem De Groot