Easily openable container closure having a shell and a sealing m

Details Easily openable container closure having a shell and a sealing m Easily openable container closure having a shell and a sealing m

1980-08-25

1981-09-29

Gilden, Leon

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

72335, 72356, B21D 2200

Patent

active

042915678

ABSTRACT:
An easily openable container closure comprising (1) a shell of a unitary structure including a top and a cylindrical skirt, said top having an annular top surface portion leading to the upper end of the skirt and a pull ring connected to a part of the inner peripheral edge of the annular top surface portion through a linking piece, and the annular top surface portion and the skirt having a pair of breaking weakened lines formed along the phantom lines extending from both side edges of the linking piece, and (2) a sealing member positioned within the shell for closing an opening present in the top surface of the shell. The annular top surface portion of the shell at least includes a first annular portion extending inwardly from the upper end of the skirt and a second annular portion extending downwardly and inwardly in an inclined manner from the first annular portion. The linking piece extending inwardly from a part of the inner peripheral edge of the annular top surface portion and the pull ring extending inwardly from the inside end of the linking piece are located at a lower level than the uppermost surface of the annular top surface portion.

REFERENCES:
patent: 3137067 (1964-06-01), Bruecker
patent: 3452396 (1969-07-01), Garver et al.
patent: 3768295 (1973-10-01), Cudzik
patent: 3786667 (1974-01-01), Garnett, Jr.
patent: 4007621 (1977-02-01), Franek

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