Patents by Inventor Joachim Dreyer

Joachim Dreyer 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).

  • Publication number: 20030035855
    Abstract: A spinning apparatus for extruding a group of filaments by means of an annular spinneret. An annular collection chamber is arranged upstream of the spinneret, which is provided with a plurality of nozzle bores. The collection chamber has an upper inlet area and a lower annular outlet area, which is connected to the upper inlet area. In the inlet area of the collection chamber a filter device is disposed, upstream of which is a melt feed. The inlet area of the collection chamber is formed by a plurality of filter chambers, which are each provided with a melt inlet and a melt outlet. The filter device has a plurality of substantially cylindrical filter elements, which are each provided with a powdered filter medium. One of these filter elements is assigned to each filter chamber. This ensures a large filtration area and deep bed filtration of the polymer melt.
    Type: Application
    Filed: August 6, 2002
    Publication date: February 20, 2003
    Inventors: Holger Brandt, Henning Rave, Arnold Beck, Joachim Dreyer, Oliver Schirber
  • Patent number: 4615670
    Abstract: An arrangement for melt spinning of synthetic high polymers comprising a spinning bar, rails arranged at a height of a nozzle set inserted in the spinning bar, and a device for exchanging the spinning bars and including a carriage with an arm hydraulically moveable from an inclined inwardly directed normal position to a horizontal working position, wherein a free end of the arm is connected with a table serving for receiving of the exchangeable nozzle set and provided with elements for centering and securing of the dismounted nozzle set.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: October 7, 1986
    Assignee: Neumuenstersche Maschinen -und Apparatebau GmbH (NEUMAG)
    Inventors: Holger Brandt, Arnold Beck, Joachim Dreyer