Forming Lug (e.g., Twist-off Cap) Patents (Class 413/24)
  • Patent number: 9968983
    Abstract: A modular method of forming a two part metal closure comprises a lug forming module for forming lugs 3 on a ring 1, a panel curl module, and an assembly module which fixes the panel inside the ring while allowing axial movement of the panel for opening.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: May 15, 2018
    Assignee: Crown Packaging Technology, Inc.
    Inventor: Paul Robert Dunwoody
  • Patent number: 7861874
    Abstract: A resealable can end is provided including a neck (10) and a cooperating cap member (12) which can be sealed onto and removed from the neck, and is capable of containing product under pressure or vacuum if desired. This end may be added, by convention seaming methods, such as roll seaming or by appropriate adhesive, to a container body, or may be formed integrally with container bodies. The venting feature of the end will achieve a controlled release of differential internal-to-ambient pressure upon initial opening of the cap, and may also provide resealed containment of partial contents retained in the container, although the contents will no longer be under pressure or vacuum, as the case may be. The end may be applied to, or incorporated in, containers made of various material, such as aluminum, coated steel, or selected plastics.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: January 4, 2011
    Assignee: Dayton Systems Group, Inc.
    Inventors: Stephen T. Cook, Mark F. Broerman, Dale R. Conley
  • Patent number: 6082944
    Abstract: A resealable can end is provided including a neck member and hat member which can be sealed onto and removed from the neck member of the end, and is capable of containing product under pressure if desired. This end can be added, as by a conventional seam, to a metal container body to obtain resealing containment of partial contents retained in the container, and to provide an improved mouth construction (or pour opening) for better pouring and for comfortable direct drinking from the container. Also disclosed are improved methods of and apparatus for making such a resealable hat and-neck type-of container end.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: July 4, 2000
    Assignee: Dayton Systems Group, Inc.
    Inventors: Henry C. Bachmann, Steven T. Cook, James R. Schubert, John F. Schubert, Lori E. Strong