Patents by Inventor Eckhard Popp

Eckhard Popp 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 for production of a tubular body
    Patent number: 10661979
    Abstract: A method for production of a tubular body applying the following steps: Pressureless application of at least one first curable plastic layer made of reactive polyurethane materials with a core via a rotational molding process, Curing the at least one plastic layer, Winding at least one reinforcement layer onto the at least one first plastic layer, Pressureless application of at least one second curable plastic layer, wherein the reinforcement layer is embedded without holes between the two plastic layers, and Removal of the core after completion of the body. Because of this, the position of the reinforcement layer 7 can be individually established and it can be ensured that the reinforcement layer will not penetrate into the first plastic layer during winding after the curing of the first plastic layer.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: May 26, 2020
    Assignee: FKM Walzentechnik Dr. Freudenberg GmbH
    Inventors: Eckhard Popp, Jan Malluche, Ulrich Freudenberg
  • Method for Production of a Tubular Body
    Publication number: 20170283161
    Abstract: A method for production of a tubular body applying the following steps: Pressureless application of at least one first curable plastic layer made of reactive polyurethane materials with a core via a rotational molding process, Curing the at least one plastic layer, Winding at least one reinforcement layer onto the at least one first plastic layer, Pressureless application of at least one second curable plastic layer, wherein the reinforcement layer is embedded without holes between the two plastic layers, and Removal of the core after completion of the body. Because of this, the position of the reinforcement layer 7 can be individually established and it can be ensured that the reinforcement layer will not penetrate into the first plastic layer during winding after the curing of the first plastic layer.
    Type: Application
    Filed: March 31, 2017
    Publication date: October 5, 2017
    Inventors: Eckhard Popp, Jan Malluche, Ulrich Freudenberg