Patents by Inventor Kurt Helffenstein

Kurt Helffenstein 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).

  • Separator for separating floating and sinking matter from waste water contaminated with said matter
    Patent number: 5405530
    Abstract: In a gravity-type separator for floating and sinking matter operating without a free level, both the separated floating matter and the separator content must be withdrawn or removed. According to the invention, this is accomplished with a pump that on the suction side has connecting ducts to the vertical center of the separator housing and the sinking matter outlet, and on the pressure side has connecting ducts to the waste water inlet duct and the clean water outlet duct. The pressurized water duct for the floating matter removal is taken from the inlet duct.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: April 11, 1995
    Assignee: Passavant
    Inventors: Walter Weiler, Gunter Diefenbach, Kurt Helffenstein