The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 1976
Filed:
Jun. 29, 1973
Alan George Dalli, Warrandyte, AU;
Michael Debenham, Frankston, AU;
Ralph Edward Shackleford, Ferntree Gully, AU;
The Broken Hill Proprietary Company, Ltd., Melbourne, AU;
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. The specification also discloses a method of forming such a closure comprising the steps of: forming an upwardly directed bulge in the sheet metal, thus stretching the sheet; partially severing a central portion of said bulge, to define an opening and said severed portion defining a closure member for said opening, and displacing the closure member downwardly so that its free edge is below the free edge of the opening; partially flattening the thus truncated bulge of sheet metal around said opening to reduce its size, and turning downwardly said free edge defining said opening; partially flattening the closure member to increase its size, and turning upwardly said free edge of the closure member, the free edge portion of said closure member being in contact with or in close proximity to said free edge defining said opening, and applying a sealant at least on the region of the free edges of the opening and the closure member to seal the closure if required by the purpose for which said container member is to be used.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile