Patents by Inventor Johan PORTMAN

Johan PORTMAN 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 apparatus for spirally winding a thermoplastic profile in the manufacture of welded plastic tubes
    Patent number: 9862136
    Abstract: A method of spirally winding a thermoplastic profile in the manufacture of welded plastic tubes and a winding apparatus for manufacturing a spirally wound tube. A thermoplastic profile is received on a plurality of sliding members being arranged in an axial direction of the tube to be manufactured and defining an essentially cylindrically shaped winding surface with a diameter essentially corresponding to the inner diameter of the tube. The profile is directed along a spiral path towards the previous turn of the profile in order to force opposite edges of the profile together for welding. The radial position of the sliding member is adjusted to control the tension in the thermoplastic profile and the force with which it constricts itself around the winding surface as defined by the sliding member.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: January 9, 2018
    Assignee: UPONOR INFRA OY
    Inventors: Christian Glasberg, Kari Karjalainen, Johan Portman, Sven Sjöberg
  • A METHOD AND APPARATUS FOR SPIRALLY WINDING A THERMOPLASTIC PROFILE IN THE MANUFACTURE OF WELDED PLASTIC TUBES
    Publication number: 20150336325
    Abstract: A method of spirally winding a thermoplastic profile in the manufacture of welded plastic tubes and a winding apparatus for manufacturing a spirally wound tube. A thermoplastic profile is received on a plurality of sliding members being arranged in an axial direction of the tube to be manufactured and defining an essentially cylindrically shaped winding surface with a diameter essentially corresponding to the inner diameter of the tube. The profile is directed along a spiral path towards the previous turn of the profile in order to force opposite edges of the profile together for welding. The radial position of the sliding member is adjusted to control the tension in the thermoplastic profile and the force with which it constricts itself around the winding surface as defined by the sliding member.
    Type: Application
    Filed: November 19, 2013
    Publication date: November 26, 2015
    Applicant: UPONOR INFRA OY
    Inventors: Christian GLASBERG, Kari KARJALAINEN, Johan PORTMAN, Sven SJÖBERG