Patents by Inventor Norbert Raschka

Norbert Raschka 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).

  • Tubular free-fall separator for separating plastic mixtures
    Patent number: 5687852
    Abstract: A tubular free-fall separator for the electrostatic separation of particles of a plastics mixture, includes two parallel opposite rows of vertical tubes which are either arranged rotatably around their own axis or are fixedly installed and are connected with a direct current voltage source for maintaining an electrostatic field between the rows. The tube rows are arranged in such a manner that two adjacent axis points of the tubes of one row always form a parallelogram, which has no right angles, with the opposite adjacent two axis points of the tubes of the other row.
    Type: Grant
    Filed: October 27, 1995
    Date of Patent: November 18, 1997
    Assignee: Kali und Salz GmbH
    Inventors: Norbert Raschka, Ingo Stahl