Title: Tear-off closure and method of forming the same

Abstract: An improved tear-off closure for a container is disclosed having a circular top end wall, a closure skirt depending from the top end wall, an annular rim projecting radially outwardly from the bottom of the closure skirt and an integral concentric pull ring around the annular rim. The pull ring comprises a curled bead having a radially inwardly open slot therein into which a terminal edge portion of the annular rim projects to secure the pull ring in a fixed position of the base of the closure skirt prior to sealing of the closure on a container. A method and tools for forming such a closure are also disclosed.

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Inventors: Lewis, Paul R. (Richmond, IN, US)

Application Number: 661255
Filing Date: 1976-02-25
Publication_date: 1977-07-26
Assignee: Aluminum Company of America (Pittsburgh, PA)
Primary Class(es): 413/16
Other Classes:
US Patent Ref:

2119662	Jun, 1938	Williams	113/121.
3865268	Feb, 1975	Coop	215/256.
3931904	Jan, 1976	Coop	215/254.
3976215	Aug, 1976	Smalley	215/305.

Other Refs:
Primary Examiner: Keenan, Michael J.
Assistant Examiner:
Attorney: Brownlee; David W., O'Rourke, Jr.; William J.