Receptacles – Receptacle side wall made of two or more layers of material... – Beverage receptacle
Patent
1988-04-14
1989-01-10
Hall, George T.
Receptacles
Receptacle side wall made of two or more layers of material...
Beverage receptacle
220 62, 413 8, B65D 808
Patent
active
047967722
ABSTRACT:
A metal closure for beverage containers of the type having a center panel, a center-panel ring, an inner leg, and a pull-tab opener, includes circumferential variegations for increasing the buckling pressure of the container. The circumferential variegations are cold-worked or coined into the center-panel ring and/or into portions of the closure that are adjacent to the center-panel ring. The circumferential variegations include coined surfaces with variegated lengths, variegated coin angles, variegated coin residuals, variegated spaces between coined surfaces, or variegated widths of the center panel. The circumferential variegations achieve non-axisymmetric doming of the metal closure and increase the buckling pressure of the closure by obviating excess metal in the center panel that typically results from scorning the center panel for the easy open end.
REFERENCES:
patent: 3441170 (1969-04-01), Khoury
patent: 4448322 (1984-05-01), Kraska
patent: 4467933 (1984-08-01), Wilkinson et al.
patent: 4577774 (1986-03-01), Nguyen
patent: 4606472 (1986-08-01), Tauhe et al.
patent: 4641761 (1987-02-01), Smith et al.
patent: 4655358 (1987-04-01), Kaffko
Alberding Gilbert E.
Ball Corporation
Hall George T.
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