Claims
- 1. 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 wherein the diameter of said center panel is less than 80% of the diameter of the outside rim; an annular countersink surrounding said center panel; a 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 extending radially outward from said chuckwall.
- 2. The can lid according to claim 1 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 30° to about 60°.
- 3. The can lid according to claim 1 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 40° to about 50°.
- 4. The can lid according to claim 1 wherein the height of said peripheral curl portion is less than 0.091 inches.
- 5. The can lid according to claim 1 further comprising a transitional portion extending radially outward from said chuckwall, wherein the peripheral curl portion extends radially outward from said transitional portion.
- 6. The can lid according to claim 1 wherein said center panel is substantially flat or planar.
- 7. The can lid according to claim 1 wherein said center panel is arcuate.
- 8. The can lid according to claim 1 wherein said chuckwall is an arcuate chuckwall.
- 9. The can lid according to claim 8 wherein said arcuate chuckwall has a radius of curvature of from about 0.4 to about 1 inch, the center-point of said radius located below the profile of said lid.
- 10. The can lid according to claim 1 further comprising a step portion extending radially outward from said chuckwall.
- 11. The can lid according to claim 10 wherein said step portion is arcuate.
- 12. The can lid according to claim 11 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.
- 13. The can lid according to claim 1 wherein said annular countersink has a height of from about 0.030 to about 0.115 inches.
- 14. The can lid according to claim 5 wherein the transitional portion has a radius of curvature of from about 0.04 to about 0.09 inches, the center-point of said radius being located below the profile of said lid.
- 15. The can lid according to claim 1 wherein the diameter of said center panel is from about 1.5 inches to about 2.0 inches.
- 16. The can lid according to claim 1 wherein said annular countersink is formed form an interior wall and an exterior wall separated by a curved bottom portion.
- 17. The can lid according to claim 16 wherein the inner and outer walls are parallel to the central axis.
- 18. The can lid according to claim 16 wherein the inner and outer walls diverge from parallel to the central axis by from about 0.5° to about 15°.
- 19. 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 wherein the diameter of said center panel is less than 80% of the diameter of the outer rim; 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.
Parent Case Info
This application is a continuation of U.S. patent application Ser. No. 09/456,345 entitled “CAN LTD CLOSURE AND METHOD OF JOINING A CAN LID CLOSURE TO A CAN BODY”, filed on Dec. 8, 1999 for inventor/applicant Christopher G. Neiner now U.S. Pat. No. 6,499,622.
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Continuations (1)
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Number |
Date |
Country |
Parent |
09/456345 |
Dec 1999 |
US |
Child |
10/153364 |
|
US |