Patents Assigned to Self Manufacturing Company
  • Seal ring for open head drum
    Patent number: 4982864
    Abstract: A closure ring for use with an open head drum utilizes a reduced diameter portion proximal each end thereof to increase the force required to draw the end of the ring together about the drum head and an associated lid and gasket, thereby increasing the compressive force applied to the gasket in the reduced diameter region resulting in greater sealing effect at the junction of the ring ends.
    Type: Grant
    Filed: February 6, 1990
    Date of Patent: January 8, 1991
    Assignee: Self Manufacturing Company
    Inventor: Fred A. Kusta