Can lid closure and method of joining a can lid closure to a can body
AssigneeMetal Container Corporation
InventorChristopher G. Neiner
Life of this patent
Estimating the term…
Abstract
A preferred embodiment of the disclosed can lid has a center panel having a central axis that is perpendicular to a diameter of the outer rim, or peripheral curl portion, of the can lid, an annular countersink surrounding the center panel, an arcuate chuckwall extending radially outward from the annular countersink, an arcuate step portion extending radially outward from the arcuate chuckwall, a transitional portion extending radially outward from the arcuate step portion, and a peripheral curl portion extending outwardly from the transitional portion.
Claims15
A lid for a can body comprising:
- a center panel having a central axis that is perpendicular to a diameter of the outer rim of said lid;
- an annular countersink surrounding said center panel;
- an arcuate chuckwall extending radially outward from said annular countersink, wherein a line passing through the ends of said chuckwall is at an angle with respect to said central axis of the center panel of from about 20° to about 80°;
- and
- a peripheral curl portion having a height less than 0.091 inches extending radially outward from said chuckwall.
A lid for a can body comprising:
- a center panel having a central axis that is perpendicular to a diameter of the outer rim of said lid;
- an annular countersink surrounding said center panel;
- an arcuate chuckwall extending radially outward from said annular countersink, wherein a line passing through the ends of said chuckwall is at an angle with respect to said central axis of the center panel of from about 20° to about 80°;
- a step portion extending radially outward from said chuckwall;
- a transitional portion extending radially outward from said step portion;
- and
- a peripheral curl portion having a height less than 0.091 inches extending radially outward from said transitional portion.
A lid for a can body comprising:
- a center panel having a central axis that is perpendicular to a diameter of the outer rim of said lid;
- an annular countersink surrounding said center panel wherein said annular countersink has a height of from about 0.030 to about 0.115 inches;
- an arcuate chuckwall extending radially outward from said annular countersink wherein said arcuate chuckwall has a radius of curvature of from about 0.4 to about 1 inch, the center-point of said radius being located below the profile of said lid, and wherein a line passing through the ends of said arcuate chuckwall is at an angle with respect to said central axis of the center panel of from about 20° to about 80°;
- an arcuate step portion extending radially outward from said arcuate chuckwall wherein said arcuate step portion has a radius of curvature of from about 0.02 to about 0.06 inches, the center-point of said radius being located above the profile of said lid;
- a transitional portion extending radially outward from said arcuate step portion;
- and
- a peripheral curl portion extending radially outward from said transitional portion wherein said peripheral curl portion has a height less than 0.091 inches.
Dependencies are inferred from the claim text.