Patents by Inventor Bernd Drzevitzky

Bernd Drzevitzky 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: 6123277
    Abstract: The invention relates to a method for the recycling of plastic-coated cable residues, which comprise a metal core and a plastic jacket, wherein the metal parts are separated from the jacket and are separately recovered. The cable residues are communited and the chopped material is softened in a swelling container (10) with a swelling agent for the plastic. Subsequent to softening, the mass flow is fed with the swelling agent to a roller cone mill (13). The roller cone mill (13) flexes the chopped material and destroys the macrostructure of the cable pieces mechanically. The metal particles are separated from the jackets by way of stirring in a stirrer (14), and the multi-phase mixture is transported to a metal sedimentor (16). The heavier metal particles sink down in the metal sedimentor (16) based on gravity and separate themselves from the lighter plastic particles.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: September 26, 2000
    Inventors: Bernd Drzevitzky, Hans Jurgen Walke, Hartmut Leitzke
  • Patent number: 4529103
    Abstract: To coat a material web of sheet, paper or another carrier material, a flowable coating material is conducted into a distributing chamber consisting of the inner space of a rotatable tube. The coating material is supplied to a wedge-shaped recess whose effective width may be adjusted by turning the tube, via a slot formed through the wall of the tube. The recess is joined in the housing block by a gap ending in an adjustable doctor gap along which the carrier material is moved. The dosing device permits a very accurate determination of the applied thickness of the coating material by fine adjustment.
    Type: Grant
    Filed: July 22, 1983
    Date of Patent: July 16, 1985
    Inventors: Bernd Drzevitzky, Wolfgang Breynk