Metal deforming – By use of closed-die and coacting work-forcer – Cup or shell drawing
Reexamination Certificate
2011-07-12
2011-07-12
Tolan, Edward (Department: 3725)
Metal deforming
By use of closed-die and coacting work-forcer
Cup or shell drawing
C413S008000, C413S025000, C413S056000, C072S379400
Reexamination Certificate
active
07975520
ABSTRACT:
A tab is used to open beer/beverage can ends and food can ends. The tab has one or more arcuate strips that are provided on a surface of the tab proximate to a peripheral surface of the tab where the one or more arcuate strips have been formed further into a preselected portion of curled or hemmed portions of the tab. Tooling for the manufacture of the tab is also provided. A method for manufacturing the tab is additionally provided as well.
REFERENCES:
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patent: 4361251 (1982-11-01), Langseder et al.
patent: 4394927 (1983-07-01), Zysset
patent: 5038956 (1991-08-01), Saunders
patent: 5590993 (1997-01-01), Saunders
patent: 5741105 (1998-04-01), Schubert et al.
patent: 5967726 (1999-10-01), Turner et al.
McEldowney Craig Allen
Mitchell Mark Richard
Coffield, Esquire Grant E.
Eckert Seamans Cherin & Mellott , LLC
Stolle Machinery Company, LLC
Tolan Edward
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