Patents by Inventor Rolf von Paumgartten

Rolf von Paumgartten 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: 5292570
    Abstract: A semifinished product formed from fiber reinforced thermoplastic material, with the semifinished product including a solid covering of fibers and thermoplastic material, which resolidifies, after melting, and a felt or wadding-like core of a fiber-polymer mixture. The core may be formed from a compressed material and the semifinished product may have either a cylindrical or oval shape. The solid covering has a thickness of less than 20% of the radius of the semifinished product, with the thickness preferably being a maximum of 10 millimeters.
    Type: Grant
    Filed: February 21, 1990
    Date of Patent: March 8, 1994
    Assignee: Menzolit GmbH
    Inventors: Gerd Ehnert, Manfred Ehlers, Rolf von Paumgartten
  • Patent number: 5252054
    Abstract: An apparatus for providing batches of a mouldable, fibre-reinforced thermoplastic material matched to a moulding to be produced and accompanied by heating, wherein a free-flowing initial product of fibres and thermoplastic material-containing binders are heated as a strand and a matched batch is separated from the strand and supplied to batch further processing. The apparatus includes a melting device with a melting channel, through which the material to be processed is pressed as a continuous strand, as well as a cooling station.
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: October 12, 1993
    Assignee: Menzolit GmbH
    Inventors: Gerd Ehnert, Manfred Ehlers, Rolf von Paumgartten
  • Patent number: 4969971
    Abstract: An apparatus for producing batches of a mouldable, fibre-reinforced thermoplastic material matched to a moulding to be produced and accompanied by heating, wherein an initial product of fibres and thermoplastic material-containing binder is heated as a strand and a matched batch is separated from the strand and supplied for batch further processing. The apparatus includes a melting device with a melting channel, through which is forced the material to be processed in the form of a continuous strand, as well as a dosing station.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: November 13, 1990
    Assignee: Menzolit GmbH
    Inventors: Gerd Ehnert, Rolf von Paumgartten
  • Patent number: 4935182
    Abstract: A process for providing batches of a mouldable, fibre-reinforced thermoplastic material matched to a moulding to be produced and accompanied by heating, whereby a free-flowing initial product of fibers and thermoplastic material-containing binders is heated as a strand and a matched batch is separated from the strand and supplied to batch further processing.
    Type: Grant
    Filed: February 10, 1988
    Date of Patent: June 19, 1990
    Assignee: Menzolit GmbH
    Inventors: Gerd Ehner, Manfred Ehlers, Rolf von Paumgartten