Patents Assigned to Zeller Plastik Koehn, Graebner & Co.
  • Patent number: 4877144
    Abstract: A threaded sleeve of plastics material, e.g. in the form of a cap, which is suitable for screwing onto a bottle opening with an external thread. The thread of the threaded sleeve is divided into segments. These segments can be separated from one another in the peripheral direction by spaces of at least 0.4 mm and can have a length in the peripheral direction of 3 to 10 mm. Threaded sleeves of this type can be manufactured with simply constructed moulds and demoulded in a simple manner. After the demoulding the thread segments do not mark the external wall of the threaded sleeves.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: October 31, 1989
    Assignee: Zeller Plastik Koehn, Graebner & Co.
    Inventor: Klaus Thanisch
  • Patent number: 4638917
    Abstract: The invention concerns a tamper proof closure for a threaded mouth. The closure comprises a plastic cap provided by means of tear-off elements with a ring. If when the mouth is sealed the ring is still on the cap, then it displays the fact it was not opened yet. The ring is secured against a screwing-off motion by lock elements at the mouth. The ring is provided with at least one aperture entered by a catch on the cap. When the cap is rotated off, the catch destroys the ring. This can be facilitated by providing predetermined rupture sites in the shape of narrow connection strips between certain ring parts.
    Type: Grant
    Filed: December 12, 1985
    Date of Patent: January 27, 1987
    Assignee: Zeller Plastik Koehn, Graebner & Co.
    Inventor: Alois Persch
  • Patent number: 4572412
    Abstract: A container, in particular a bottle, made of a plastic which can be elastically deformed. The container has a pipe for filling and removing the contents. The container has a part which can be folded in in its main part or in its shoulder section. The pipe can be brought into an inclined position relative to the axis of the container by a folding-in operation, by which the container contents can be emptied or poured out at an angle while the container is held vertical but upside down.
    Type: Grant
    Filed: August 8, 1984
    Date of Patent: February 25, 1986
    Assignee: Zeller Plastik Koehn, Graebner & Co.
    Inventors: Ulrich Brach, Wilhelm Wiesinger