Patents by Inventor Gunther Sothje

Gunther Sothje 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: 4157887
    Abstract: A press tool for production of moulded ceramic articles from powder material includes a lower tool part adapted to be supported on a press table and carrying a lower die. A matrix shell encircles the lower die and is mounted to move up and down relatively to it. An upper tool part is adapted to be connected to the plunger of the press and carries an upper die which on lowering of the plunger of the press projects into the matrix shell. To fill the powder material into the cavity defined by the lower die and the matrix shell, an annular hopper in the form of an funnel encircles the upper die and is mounted to slide axially thereon. The hopper has an annular outlet facing radially inwards and opening into the cavity when the hopper is in its lower position with respect to the upper die but closed by the upper die when the hopper is in a raised position relatively to the upper die.
    Type: Grant
    Filed: February 24, 1978
    Date of Patent: June 12, 1979
    Assignee: Gebruder Netzsch, Maschinenfabrik GmbH & Co.
    Inventor: Gunther Sothje