Patents Assigned to Ring Lock Container S. A.
  • Receptacle with a cover of plastics material
    Patent number: 4296871
    Abstract: A receptacle having an integral ring-shaped lock for engaging the depending rim of a cover. In order to prevent an undesirable opening said ring-shaped lock is reinforced by depending tips in a first weakened portion and supported by stays in a second weakened portion. The rim and the ring-shaped lock have interengaging conical surfaces. The cover has a depressed central area with an outer wall for engagement with the inner side of the receptacle wall.
    Type: Grant
    Filed: July 23, 1979
    Date of Patent: October 27, 1981
    Assignee: Ring Lock Container S. A.
    Inventor: Poul G. Andersson