Patents Assigned to Kornelis' Kunsthars Producten Industrie BV
  • Closure cap with sealing ring
    Patent number: 4244481
    Abstract: An internally rotation-symmetrical closure cap for closing a container, comprising a closed end wall and a side wall, said end wall being internally provided with an integral annular channel provided with a sealing ring in co-operation with the upper rim of the container by means of which the container is sealed. The channel comprises side walls which have the shape of two facing undercuts, while the sealing ring is a ring formed in situ by gelation.
    Type: Grant
    Filed: July 24, 1979
    Date of Patent: January 13, 1981
    Assignee: Kornelis' Kunsthars Producten Industrie BV
    Inventor: Wiebren D. H. Kornelis