Patents Assigned to Adam Heldmann Kunststoffverarbeitung
  • Device for the repeated opening and closing of an aperture in a cover of a container
    Patent number: 4280634
    Abstract: Device for the repeated opening and closing of an aperture in a cover of a container which cover is provided at its bottom side with a layer of plastics material, wherein a pouring member 20 of plastics material is provided with a flange 22 which is tightly connected to the plastics material layer 12 on the bottom side of the cover 10 and, at a distance from the upper side of the cover 10, with a bulge 30 which is surrounded by a tightly mounted closing member 28,60.
    Type: Grant
    Filed: November 8, 1979
    Date of Patent: July 28, 1981
    Assignees: Firma Peter Eckes, Adam Heldmann Kunststoffverarbeitung
    Inventors: Alfred Wiesenberger, Lutz Mager, Erich Kolb, Karl Kreim