Patents by Inventor Manfred Weyell

Manfred Weyell 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).

  • Method and device for crystallising plastic granules with a tendency to conglutinate, particularly PET and PU granules
    Patent number: 7642337
    Abstract: In a method for crystallising plastic granules with a tendency to conglutinate, in particular PET and PU granules, the granules are subjected to vibratory excitation in a vibrating trough (1) transversely to the direction of longitudinal extension of the vibrating trough (1), at around their reaction temperature. The flow of granules follows a spiral path through the trough, achieving a narrow dwell time spectrum and a homogenous temperature gradient for the granules. Conglutination is also reliably prevented.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: January 5, 2010
    Assignee: Vibra Maschinenfabrik Schultheis GmbH & Co.
    Inventors: Manfred Weyell, Johannes Maurer
  • Method and device for crystallising plastic granules with a tendency to conglutinate, particularly PET and PU granules
    Publication number: 20080171847
    Abstract: In a method for crystallising plastic granules with a tendency to conglutinate, in particular PET and PU granules, the granules are subjected to vibratory excitation in a vibrating trough (1) transversely to the direction of longitudinal extension of the vibrating trough (1), at around their reaction temperature. The flow of granules follows a spiral path through the trough, achieving a narrow dwell time spectrum and a homogenous temperature gradient for the granules. Conglutination is also reliably prevented.
    Type: Application
    Filed: March 13, 2008
    Publication date: July 17, 2008
    Applicant: VIBRA MASCHINENFABRIK SCHULTHEIS GMBH & CO.
    Inventors: Manfred WEYELL, Johannes MAURER