Can end with strengthening bead configuration

Patent metadata

Field	Value
Publication number	US-9550604-B2
Application number	US-201514613041-A
Country	US
Kind code	B2
Filing date	Feb 3, 2015
Priority date	Oct 18, 2010
Publication date	Jan 24, 2017
Grant date	Jan 24, 2017

Abstract

A can end that is attached to a metal can body with a bottom end forming a cavity that may be filled with food, liquid, etc. The can end is made of metal with a bead configuration located in the outer circumference of the can end that increases its resistance to deformation when subjected to high pressure cooking environments and assists in preventing the can end from separating along the frangible score.

First claim

What is claimed is:

1. A metal, food can, can end comprising:
a center panel, wherein a center point of the can end is located within the center panel;
a bead panel located radially outside of the center panel, the bead panel comprising:
an inner downward bead defining a first low point;
an outer downward bead defining a second low point, the outer downward bead located radially outside of the inner downward bead; and
a first connector section extending between the inner downward bead and the outer downward bead, the first low point and the second low point each being vertically below a lowermost surface of the first connector section;

a counter-sink section located radially outside of the bead panel;
a wall extending upward from an outer edge of the counter-sink section;
a curled section extending radially outward from an upper edge of the wall, wherein the curled section is configured to be crimped with an upper end of a metal can body to form a seam; and
a tab, wherein the outer downward bead is a continuous bead that is concentric with the outer circumference of the can end, and further wherein the inner downward bead is a non-continuous bead having a first end and a second end, the ends positioned on opposing lateral sides of the tab.

2. The metal can end of claim 1 , the bead panel further comprising:
an inner upward bead defining a first high point, the first low point located radially outside of the first high point;
a central upward bead defining a second high point, the second high point located radially outside of the first low point; and
an outer upward bead defining a third high point, the third high point located radially outside of the second low point.

3. The metal can end of claim 2 , further comprising:
a frangible score formed in the material of the outer upward bead;
wherein the tab is configured to pivot to break the score allowing a portion of the can end located within the score to separate from a portion of the can end located outside of the score.

4. The metal can end of claim 3 , further comprising a depression located within the center panel, wherein the tab comprises a gripping portion located above the depression, wherein the depression acts as a finger well facilitating user access to the gripping portion of the tab.

5. The metal can end of claim 2 , wherein a radial distance from the center point of the can end to an innermost edge of the inner downward bead is greater than half of the radius of the can end.

6. The metal can end of claim 5 , wherein a diameter of an outermost edge of the center panel is between 1.795 inches and 1.785 inches, wherein a diameter of the inner downward bead measured between opposing first low points is between 2.095 and 2.085 inches, and wherein a diameter of the outer downward bead measured between opposing second low points of the outer downward bead is between 2.445 and 2.435 inches.

7. The metal can end of claim 6 , wherein a diameter of the outer upward bead measured between opposing third high points is between 2.647 and 2.637 inches.

8. The metal can end of claim 2 :
wherein the first low point is vertically below the third high point;
wherein a vertical distance between the first low point and the third high point is between 0.027 and 0.017 inches;
wherein the second low point is vertically below the third high point;
wherein a vertical distance between the second low point and the third high point is between 0.010 and 0.004 inches;
wherein the first high point is vertically below the third high point;
wherein a vertical distance between the first high point and the third high point is between 0.012 and 0.001 inches;
wherein the second high point is between 0.000 and 0.014 inches vertically below the third high point or between 0.000 and 0.006 inches vertically above the third high point.

9. The metal can end of claim 2 , wherein the tab is located at a 12 o'clock position on the can end, wherein at a 6 o'clock position, a vertical distance between the second low point and the third high point is between 0.01 and 0.004 inches, and wherein at the 12 o'clock position, a vertical distance between the second low point and the third high point is between 0.016 and 0.010.

10. The metal can end of claim 1 :
wherein the inner downward bead comprises a first curved section defining the first low point;
wherein the outer downward bead comprises a second curved section defining the second low point;
wherein a radius of curvature of the upper surface of the first curved section is between 0.029 and 0.019 inches; and
wherein a radius of curvature of the upper surface of the second curved section is between 0.020 and 0.010 inches.

11. The metal can end of claim 1 , wherein the inner downward bead is concentric with the outer downward bead for at least 180 degrees and less than 360 degrees of the can end.

12. The metal can end of claim 11 , the can end being attached to a metal can body containing contents, wherein the inner downward bead and the outer downward bead are configured to strengthen the can end to resist deformation that may occur when the pressure of the contents of the metal can body exceeds 20 pounds per square inch.

13. The metal can end of claim 12 , wherein the can end is formed of double reduced steel with a thickness less than or equal to 68 gauge.

14. The metal can end of claim 13 , wherein a vertical distance between an uppermost surface of the curled section and a lowermost surface of the counter-sink section is less than or equal to 0.190 inches.

15. The metal can end of claim 12 , wherein the can end is formed of double reduced steel with a thickness less than 75 gauge.

16. The metal can end of claim 15 , wherein a vertical distance between an uppermost surface of the curled section and a lowermost surface of the counter-sink section is less than 0.220 inches.

17. The metal can end of claim 1 coupled to a metal can body via the seam.

18. The metal can end of claim 1 coupled to one end of a metal can body via the seam, wherein a second can end is coupled to the other end of the metal can body via a second seam, wherein food is located within a cavity defined by the metal can body and the can ends.

19. A metal, food can, can end comprising:
a center panel, wherein a center point of the can end is located within the center panel;
a bead panel having a top surface and a bottom surface located radially outside of the center panel, the bottom surface of the bead panel defining:
an inner downward bead and an outer downward bead located radially outside of the inner downward bead;

a counter-sink section located radially outside of the bead panel;
a wall extending upward from an outer edge of the counter-sink section;
a curled section extending radially outward from an upper edge of the wall; and
a fixation point located radially inside of the outer downward bead configured to couple an opening mechanism to the can end, wherein the outer downward bead is a continuous bead that is concentric with the outer circumference of the can end, and further wherein the inner downward bead is a non-continuous bead having a first end and a second end, the first and second ends of the inner downward bead positioned on opposing lateral sides of the fixation point.

20. A metal, food can, can end comprising:
a center panel, wherein a center point of the can end is located within the center panel;
a bead panel having a top surface and a bottom surface located radially outside of the center panel, the bottom surface of

Assignees

• Silgan Containers Llc

Inventors

• Burleson Jr Lynn A
• Phillips John L
• Gust Donald M
• Bloedorn Rohm E

Classifications

• B65D2517/0013

  pull-out tear panel, e.g. by means of a tear-tab · CPC title

• B65D2517/0079

  located beneath tab hand grip to facilitate initial lifting · CPC title

• B65D7/44 Primary

  Reinforcing or strengthening parts or members · CPC title

• B65D2517/007

  located within tear-out/push-in panel · CPC title

• B65D17/163

  Operations & Transport · mapped topic