Patents by Inventor Alwin Graafland

Alwin Graafland 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: 5772187
    Abstract: An apparatus for cooling and processing a molten product into a granulate product which apparatus comprises a displaceable support consisting of at least one substantially horizontal, disk-shaped element arranged for rotation about a substantially vertical shaft, means for depositing the molten product on the support, cooling means containing cooling liquid channels closed in themselves that form part of the disc-shaped element and, without connection with the environment, connect to feed and discharge means, and means for removing the molten product from the support in granulate form. Preferably, a double spiral-shaped channel is present per disk-shaped element, and the means for depositing the molten product on the support comprise a dispenser adapted to dispense the molten product batchwise or dropwise.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: June 30, 1998
    Assignee: Goudsche Machinefabriek B.V.
    Inventors: Abimanjoe Saroso Wirodihardjo, Wijnand Jacob t Hart, Alwin Graafland