Sheet metal container making – Method – Forming or treating metallic closure
Reexamination Certificate
2011-01-18
2011-01-18
Ross, Dana (Department: 3725)
Sheet metal container making
Method
Forming or treating metallic closure
C413S012000, C413S067000, C072S379400
Reexamination Certificate
active
07871230
ABSTRACT:
The mold apparatus has a pair of upper and lower molds being used for forming a score on one side surface of an easy-opening can end fabricated by a laminated metal sheet. The upper mold has a convex part for forming the score, and the cross sectional shape of the convex part at the portion contacting the laminated metal sheet is composed of a curve having a change rate of inclination of 0.08 or smaller to the upper surface of the facing lower mold, or having the curve and a straight line. The formed score has a maximum width of 0.80 mm or smaller.
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European Patent Office issued an European Search Report dated Jan. 26, 2009, Application No. 04799864.6.
Iwasa Hiroki
Kojima Katsumi
Kubo Hiroshi
Oshima Yasuhide
Yasue Yoshihiko
JFE Steel Corporation
Ross Dana
Young & Thompson
Yusuf Mohammad
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