Patents by Inventor Ralf Knobel

Ralf Knobel 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: 6217700
    Abstract: A method and an apparatus for manufacturing thermoset webs of thermoplastic polymer material which is comminuted into particles, such as flakes, granulated material or the like or is ground into powder. The thermoplastic polymer material particles are distributed uniformly on the lower conveyor belt; the distance between the lower and upper conveyor belt is maintained equal to the thickness of the web to be manufactured; the initial layer poured onto the surface area of the lower conveyor belt is applied with such a thickness of the layer that the thermoplastic polymer material particles are subjected during the entire transport between the upper and lower conveyor belts in the heating and cooling sections only to a minimum pressure of at most 0.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: April 17, 2001
    Assignee: Schilling-Knobel GmbH
    Inventor: Ralf Knobel