Patents by Inventor Ralph Edward Shackleford

Ralph Edward Shackleford has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 3931909
    Abstract: This specification discloses an easy-opening closure for a can end which comprises an opening formed by partially severing a portion from the can end to leave the portion attached thereto by an integral neck, and a closure member formed from said severed portion and which is larger than said opening. The sheet metal adjacent the free edge of the opening is downwardly turned while the sheet metal adjacent the free edge of the closure member is upwardly turned, said free edges being in contact with or in close proximity to each other. A sealant is applied at least in the region of the free edges if required by the purpose for which the can end is to be used.
    Type: Grant
    Filed: June 29, 1973
    Date of Patent: January 13, 1976
    Assignee: The Broken Hill Proprietary Company, Ltd.
    Inventors: Alan George Dalli, Michael Debenham, Ralph Edward Shackleford