ES2680470T3 - Beverage can end with ventilation - Google Patents

Abstract

A beverage can end (210a) comprising: a peripheral rim (212) capable of joining a can body (8) by stitching; a wall structure (214) radially inward of the rim; a central panel (218a); a main incision (226) defining a main hinge (30) and a main release panel (28) which is capable of opening upon rupture of the incision to form a pour opening; a flange (270) coupled to the central panel by a rivet (222), the flange having a nose (72) capable of contacting a portion of the main release panel for breaking the main incision, a body (74), and a bead (76) formed opposite the nose, the bead being configured to be grasped by a user; a vent hole (240) including: a vent incision (242) defining a release vent panel (244) and a vent hinge (46, 146) located approximately between opposite ends of the vent incision; and an upwardly projecting button (50,150) located on the release vent panel; whereby the actuation of the flange when raising the heel is capable of breaking the main incision and the actuation of the flange when pressing down on the flange is capable of breaking the ventilation incision, characterized in that it includes a main bead (288a) raised having a first end (289) located on the heel side of the flange and extending around the main release panel to a second end (290), said first and second ends being spaced apart; and a raised or lowered vent cord (299) positioned over the vent incision; wherein the main chord is separated from the vent chord, and the main chord is asymmetrical with respect to a main central line (CL) defined through the rivet and coincident with an axis of symmetry of the flange when the flange is in a position ready to actuate to open the main removable panel.

Description

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

DESCRIPTION

Beverage can end with ventilation Cross reference to related requests

Background

The present invention relates to containers, and more particularly to beverage containers that have a vent hole to release internal pressure and / or to improve spillage.

The ends of modern beverage cans include a rivet formed in a central panel, a flange coupled to the end by a rivet, and an incision that breaks to form a pouring opening. The extremes are required to have very low failure rates even while produced in large quantities and are classified to contain 85 psi (5.86 bar) or more. Several ends of beverages with ventilation have been reported. A ventilated beverage end can be used in a container that does not have to be pressurized, such as the non-carbonated beverage container.

U.S. Patent Nos. 6,079,583 and 6,354,453 disclose an end that has ventilation capabilities that do not require a second opening. US Patent Publication Number 2001/0266281 discloses an end that has a ventilation incision that is separate from the main incision. The ventilation incision defines a removable ventilation panel that rises. The ventilation incision is broken by first placing a concave region of the flange on the removable raised ventilation panel and pushing down on the flange to break the ventilation incision. WO2013067398 discloses a vent closure. Document US2011 / 0266281 discloses a can end with the features mentioned in the preamble of claim 1 attached.

There is a need to improve the reliability and functionality of ventilation openings in commercial quantities.

Summary

A can end according to claim 1 has ventilation characteristics that provide the improvement function. This summary provides an overview of the characteristics of the end, and it is understood that several features can work together to improve the performance of the end and its ventilation. Accordingly, the present invention is not limited to the particular characteristics of the combinations provided below. In addition, no particular feature or dimension is required unless expressly stated in the claims.

According to a first combination of features, a beverage can end has a particular structure and a dimensional relationship between a ventilation incision and a button on the ventilation panel defined or encompassed by the ventilation incision. The end includes a peripheral flange capable of attaching to a can body by crimping; a wall structure radially into the flange; a central panel; a main incision that defines a main joint and a main removable panel that is capable of opening in case of breaking the incision to form a pour opening; a flange coupled to the central panel by means of a rivet, the flange having a nose capable of contacting a portion of the main removable panel by the rupture of the main incision, a body, and a heel formed in front of the nose, the heel being configured to be grabbed by a user; a ventilation incision that defines: a removable ventilation panel; an upwardly projecting button located on the removable vent panel, the button including a side wall that reaches a radius that fuses with a portion of the center panel; and a ventilation joint located approximately between opposite ends of the ventilation incision; the ventilation incision having a distance D3 or D13 from the side wall of the button, measured at a point where the ventilation incision is closer to the side wall of the button, not more than 0.020 inches (0.508 mm), and preferably between -, 010 inches (-0.254 mm) and 0.020 inches (0.508 mm) such that the downward force transmitted from the heel of the flange to the button breaks the incision. The actuation of the flange when raising the heel is capable of breaking the main incision and the actuation of the flange when pressing down the flange is capable of breaking the ventilation incision. The ventilation joint is preferably oriented such that the rupture of the incision propagates around the removable ventilation panel in two directions to the ventilation joint.

In the preferred embodiment, the distance D3 is between -0.010 inches (i.e. minus 0.010 inches) (-0.254 mm) and 0.020 inches (0.508 mm). More preferably, the dimension D3 is between -0.006 inches (-0.1524 mm) and 0.015 inches (0.381 mm), more preferably between -0.003 inches (-0.0762 mm) and 0.013 inches (0.3302 mm), and most preferably between -0.001 (-0.0254 mm) or 0.000 inches (0 mm) and 0.006 inches (0.1524 mm). Measured through the same line as D3, the distance from the center line of the button to the inner edge of the incision 42 is preferably between -, 005 (-0,127 mm) and, 040 inches (1,016 mm) (i.e., R2 intervals plus D3) plus half of D1. For a button diameter of 0,130 inches (3,302 mm), the dimension of the center line of the button to the inside edge of the incision 42 is therefore between 0.060 (1,524 mm)

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

and 0.105 inches (2,667 mm).

Preferably, the radius R2 between the button and the center panel or a vent incision panel is between about 0.005 inches (0.127 mm) and about 0.020 inches (0.508 mm), preferably between about 0.0075 inches (0.1990 mm) and 0.0115 inches (0.2921 mm), and more preferably it is about 0.0095 inches (0.2413 mm).

The button preferably has a diameter between about 0.10 inches (2.54 mm) and about 0.18 inches (4,572 mm), more preferably between about 0.115 inches (2.921 mm) and about 0.15 (3.81 mm) , and preferably about 0,130 inches (3,302 mm). Preferably, the ventilation incision is not separated from the side wall of the button by a uniform distance. The ventilation hole can, in this sense, be configured in such a way that the ventilation incision is closer to the side wall of the button at a point in front of the joint. Alternatively, the closest location of the ventilation incision to the side wall of the button is not opposite the joint. The ventilation joint may be opposite the rivet. Alternatively, the ventilation joint is on one side of the button next to the rivet.

The tab has a contact element that is configured to contact the button. The flange contact element may be a downwardly extending cord that is elongated and sized to allow the flange cord to enter the vent opening formed by pressing the removable vent panel. The flange of the flange can be curved in a radius that is approximately equal to the distance between a center of the rivet and the vent button to promote contact between the flange of the flange and the button and allow good contact in a wide range of angular tab positions.

The structure of the flange cord and the vent button and the relative locations and dimensions of the end portions can be configured such that during the opening procedure of the vent hole, in response to the downward pressure applied on the tab by a user, the ventilation incision is initially broken at a point where the ventilation incision is closer to the side wall of the button. In this sense, the flange is configured in such a way that the initial contact by a flange of the flange against the button is in a location where the button that is close to where the ventilation incision is closest to the side wall of the button . In addition, the flange and the button can be configured such that after the initial contact, the rear contact of the flange of the flange against the button moves from the initial contact point backward on the button as the removable panel of ventilation pivots around the joint.

A vent button and the incision preferably have a design that promotes reliable opening. The ventilation opening preferably defines: an X dimension from a center of the button to the lateral ends of the ventilation incision along a central ventilation line CL, a Y dimension from the center of the button to the ventilation joint, and a dimension Z from the center of the button to a proximal point of the ventilation incision, which is the point of the incision that is closest to the button. The X dimension is greater than Z and less than 5Z and the Y dimension is greater than 0.5Z and less than 3Z. Preferably, the X dimension is greater than 1.2Z and less than 3Z, and the Y dimension is greater than 0.75Z and less than 2Z, and more preferably the Y dimension is greater than 0.9Z and less than 1.5Z. For ends of conventional beverage cans, the Z dimension is preferably between 0.0625 (1.5875 mm) and 0.090 inches (2.286 mm), and more preferably between 0.065 (1.651 mm) and 0.085 inches (2.159 mm), and more preferably between 0.068 (1.7272 mm) and 0.078 inches (1.9812 mm). In one embodiment (for example as shown in Figure 2), the Z dimension is 0.083 inches (2.1082 mm). The dimensions and intervals of X and Y can be calculated from the preferred Z dimensions.

In another embodiment, the dimensions of the incision 142 are preferably X of approximately 0.133 inches (3.6322 mm), Y of approximately 0.101 inches (2.5654 mm), and Z of approximately 0.083 inches (2.1082 mm). The Z dimension is preferably between 0.2X and 1X, and more preferably between 0.33x and 0.83X. The Z dimension is preferably between 0.5Y and 1.33Y, and more preferably between 0.67Y and 1.1Y.

The Z dimension can also be defined as a ratio of the diameter D1 of the button. In this regard, the Z dimension may be approximately between 0.5D1 and 0.81D1, preferably approximately between 0.55D1 and 0.7D1, and in the preferred embodiment of approximately 0.6D1. Since Y encompasses a dimension smaller than D1, the joint can intersect with the button structure such that after actuation of the ventilation panel, the joint is not formed in a straight line but is formed around the button. The ventilation incision can be formed in a local recess for any of the previous structure.

According to a second combination of the end features, the ventilation incision, which at least partially defines the removable ventilation panel, can be placed in a local recess or relief portion. In this regard, the beverage can end may include: a peripheral flange capable of joining a canned body by hooking; a wall structure radially into the flange; a central panel; a main incision that defines a main joint and a main removable panel that is capable of opening in case of breaking the incision to form a pour opening; a flange coupled to the central panel by means of a rivet, the flange having a nose capable of contacting a portion of the panel

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

60

Main removable by the rupture of the main incision, a body, and a heel formed in front of the nose, the heel being configured to be grasped by a user, and a vent hole. The ventilation incision defines a removable ventilation panel and there is an upwardly projecting button located on the removable ventilation panel. A ventilation joint is located approximately between the opposite ends of the ventilation incision; and a ventilation recess is formed in the central panel, and the removable ventilation panel is located in the recess of the ventilation panel. The actuation of the flange by raising the heel is capable of breaking the main incision and the actuation of the flange by pressing down the flange is capable of breaking the ventilation incision after the flange is pivoted on the button of the panel. ventilation. The inventors believe that the local ventilation recess can counteract the effects of the loose metal formed by the ventilation incision and the anti-fracture incision. The depth and diameter of the ventilation recess can be chosen in accordance with industrial practices based on the variables of aluminum thickness, ventilation size and incision configuration, and other parameters.

Preferably, the central panel further includes a general type main recess that is known in the art and is associated with a "Stolle style" central panel, but no such recess is required. If present, each of the main incision, rivet, and recess of the ventilation panel can be formed in the main recess. To place the ventilation button in a position where it is not inadvertently opened by an unintended downward force on the cord, the ventilation button can be placed on the center panel at a place that is not below the tab or its vertical projection, while the flange is in its state as manufactured. Preferably, the state as manufactured places the flange in an opening position of the main pour opening by the breakage of the main incision. In addition, the location of the ventilation hole is preferably high in the central panel (that is, when the can is oriented for pouring or drinking or when the central panel is almost vertical), since the recess of the ventilation panel is preferably tangential to the periphery of the main recess and is near the tab. In this sense, the choice of the location of the ventilation hole so that it is at a relatively high point in the central panel improves the ventilation function during the pouring, and the choice of the location of the ventilation hole outside the projection of the tab and even separated from the tab makes inadvertent breakage of the tab unlikely. In addition, the ventilation hole is configured in such a way that the main recess is not symmetrical around its center line.

Another combination of ventilation hole features promotes a large area of ventilation formed between the periphery of the removable ventilation panel and the stationary rest of the end, especially when viewed as a function of angular deflection of the removable ventilation panel. In this sense, the beverage can end includes: a peripheral flange capable of joining a canned body by hooking; a wall structure radially into the flange; a central panel; a main incision that defines a main joint and a main removable panel that is capable of opening in case of breaking the incision to form a pour opening; a flange coupled to the central panel by means of a rivet, the flange having a nose capable of contacting a portion of the main removable panel by the rupture of the main incision, a body, and a heel formed in front of the nose, the heel being configured to be grabbed by a user; and an incision of elongated ventilation.

The elongated ventilation incision defines or encompasses a removable ventilation panel. An upwardly projecting button is located on the removable ventilation panel, the button including a side wall that reaches a radius that merges with a portion of the central panel. A ventilation joint is located approximately between the opposite ends of the ventilation incision. The elongated ventilation incision provides improved ventilation capacity after deflection of the removable ventilation panel after rupture.

Preferably, the flange includes an elongated cord on a lower side of the flange near the heel. The flange and the ventilation incision are configured in such a way that after actuation of the flange of the flange against the vent button, the flange of the flange is configured to enter the opening created in case of rupture of the venting incision for improve deflection of the removable ventilation panel. The ventilation joint can be oriented such that it is parallel to the long axis of the elongated ventilation incision or perpendicular to the long axis of the elongated ventilation incision.

According to a fourth combination of the end features, a configuration of the ventilation button, the ventilation incision, and the ventilation joint are chosen to provide reliable opening and adequate strength in commercial quantities. Therefore, the beverage can end includes a peripheral flange capable of attaching to a can body by crimping; a wall structure radially into the flange; a central panel; a main incision that defines a main joint and a main removable panel that is capable of opening in case of breaking the incision to form a pour opening; a flange coupled to the central panel by means of a rivet, the flange having a nose capable of contacting a portion of the main removable panel by the rupture of the main incision, a body, and a heel formed in front of the nose, the heel being configured to be grabbed by a user; and a ventilation hole.

The ventilation hole has a ventilation incision that defines or encompasses a removable ventilation panel. An upwardly projecting button is located on the removable ventilation panel, the button including a side wall that reaches a radius that merges with a portion of the central panel. A ventilation joint is located approximately between the opposite ends of the ventilation incision. Removable ventilation panel

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

defines an X dimension from a button center to the lateral ends of the ventilation incision along a central ventilation CL line, a Y dimension from the center of the button to the ventilation joint, and a Z dimension from the center from the button to a point of proximal the ventilation incision, which is the point where the incision is closest to the button.

With respect to preferred relationships, the X dimension is greater than Z and less than 5Z and the Y dimension is greater than 0.5Z and less than 3Z. Preferably, the X dimension is greater than 1.2 and less than Z 3Z, and the Y dimension is greater than 0.75Z and less than 2Z, and more preferably the Y dimension is greater than 0.9Z and less than 1.5Z . For ends of conventional beverage cans, the Z dimension is preferably between 0.0625 (1.5875 mm) and 0.090 inches (2.286 mm), and more preferably between 0.065 (1.651 mm) and 0.085 inches (2.159 mm), and more preferably between 0.068 (1.7272 mm) and 0.078 inches (1.9812 mm). The dimensions and intervals of X and Y can be calculated from the preferred Z dimensions.

In another embodiment, the dimensions of the incision 142 are preferably X of approximately 0.133 inches (3.6322 mm), Y of approximately 0.101 inches (2.5654 mm), and Z of approximately 0.083 inches (2.1082 mm). The Z dimension is preferably between 0.2X and 1X, and more preferably between 0.33x and 0.83X. The Z dimension is preferably between 0.5Y and 1.33Y, and more preferably between 0.67Y and 1.1Y.

The Z dimension can also be defined as a ratio of the diameter D1 of the button. In this regard, the Z dimension may be approximately between 0.5D1 and 0.81D1, preferably approximately between 0.55D1 and 0.7D1, and in the preferred embodiment of approximately 0.6D1. Since Y encompasses a dimension smaller than D1, the joint can intersect with the button structure such that after actuating the ventilation panel, the joint is not formed in a straight line but is formed around the button. The ventilation incision can be formed in a local recess for any of the previous structure.

The ventilation incision preferably has a distance D3 or D13 from the side wall of the button, measured at a point where the ventilation incision is closest to the side wall of the button, between -0.010 inches (i.e. less than 0.010 inches ) (-0.254 mm) and 0.020 inches (0.508 mm) such that the downward force transmitted from the heel of the tab to the button breaks the incision. Preferably, the distance D3 or D13 is between -0.006 inches (-0.1524 mm) and 0.015 inches (0.381 mm), more preferably -0.003 inches (-0.0762 mm) and 0.013 inches (0.3302 mm), and more preferably between -0.001 (- 0.0254 mm) or 0.000 inches (0 mm) and 0.006 inches (0.1524 mm).

The flange has a contact element that is configured to contact the button, which is preferably a cord that protrudes downward that is elongated and sized to allow the flange cord to enter the ventilation opening formed by pressing the removable ventilation panel. In response to the downward pressure applied to the flange, the ventilation incision is initially broken at a point where the ventilation incision is closer to the side wall of the button.

Preferably, the flange is configured such that the initial contact by a flange of the flange against the button is in a location on the button that is close to where the ventilation incision is closest to the side wall of the button. In addition, the flange and the button can be configured such that after initial contact, the subsequent contact by the flange of the flange against the button moves from the initial contact point backward on the button as the removable panel of ventilation pivots around the joint. Preferably, the central panel includes a ventilation recess formed in a main recess and the removable ventilation panel is in the recess of the ventilation panel.

According to a fifth combination of end features, a beverage tab can be configured to improve ventilation. In this sense, the contact between the flange and the ventilation structures occurs at a point or a line that moves back towards the joint as the ventilation hole opens to promote deflection of the ventilation panel. The beverage can end configured in this manner may include a peripheral flange capable of joining a canned body by hooking; a wall structure radially into the flange; a central panel; a main incision that defines a main joint and a main removable panel that is capable of opening in case of breaking the incision to form a pour opening; and a flange coupled to the central panel by a rivet. The flange has a nose capable of contacting a portion of the main removable panel by breaking the incision, a body, a heel formed in front of the nose, the heel being configured to be grasped by a user, and a cord that is extend down on a lower side of the tab near the heel.

The fifth end also includes a ventilation hole. A ventilation incision defines or encompasses a removable ventilation panel. An upwardly projecting button is located on the removable ventilation panel, the button including a side wall that reaches a radius that merges with a portion of the central panel. A ventilation joint is located approximately between the opposite ends of the ventilation incision. The tab is configured such that a first contact by a tab cord against the button is in a button location that is known as an initial contact point. After the initial contact, the subsequent contact by the flange of the flange against the button moves from the initial contact point backward on the button as the removable ventilation panel pivots around the joint (i.e., the point of

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

60

contact moves with respect to the rivet and on the button). Preferably, the ventilation joint is opposite the rivet.

Preferably, the button and the tab are configured such that the ventilation incision has a distance D3 or D13 from the side wall of the button, measured at a point where the ventilation incision is closer to the side wall of the button , between -0.010 inches (that is, minus 0.010 inches) (-0.254 mm) and 0.020 inches (0.508 mm) such that the transmitted downward force of the heel from the tab to the button breaks the incision. Preferably, the distance D3 or D13 is between -0.006 inches (-0.1524 mm) and 0.015 inches (0.381 mm), more preferably -0.003 inches (-0.0762 mm) and 0.013 inches (0.3302 mm), and more preferably between -0.001 (- 0.0254 mm) or 0.000 inches (0 mm) and 0.006 inches (0.1524 mm). And the button preferably has a diameter of approximately 0.125 inches (3.302 mm). The flange of the flange can be curved at a radius approximately equal to the distance between the center of the rivet and the vent button.

Preferably, the closest location of the vent incision to the side wall of the button is in front of the vent joint. On the other hand, the closest location of the ventilation incision to the side wall of the button is not in front of the ventilation joint. The flange can be configured so that the initial contact by a flange of the flange against the button is in a location on the button that is close to where the ventilation incision is closest to the side wall of the button.

The flange has a contact element that is configured to contact the button, which is preferably a downwardly extending cord that is elongated and sized to allow the flange cord to enter the vent opening formed by pressing the panel. removable ventilation. In response to the pressure applied downward in the flange, the ventilation incision is preferably initially broken at a point where the ventilation incision is closer to the side wall of the button. The bead cord can be curved in a radius that is approximately equal to the distance between a center of the rivet and the vent button.

In addition, the ventilation configuration can define X, Y, and Z dimensions and relationships as described above. And the ventilation hole can be formed in a ventilation cavity formed in the central panel and in the main recess.

In accordance with a first aspect of the invention, a beverage can end includes a peripheral flange capable of joining a canned body by hooking; a wall structure radially into the flange; a central panel; a main incision that defines a main joint and a main removable panel that is capable of opening in case of breaking the incision to form a pour opening; a flange coupled to the central panel by means of a rivet, the flange having a nose capable of contacting a portion of the main removable panel by the rupture of the main incision, a body, and a heel formed in front of the nose, the heel being configured to be grabbed by a user; an elevated main cord has a first end located on the heel side of the flange and extending around the main removable panel to a second end, the first and second ends being separated; and a ventilation hole. The vent hole includes: a vent incision defining a removable vent panel and a vent joint located approximately between opposite ends of the vent incision; and an upwardly projecting button located on the removable ventilation panel. An elevated or lowered ventilation cord is placed over the ventilation incision, in which the main cord is separated from the ventilation cord, and the main cord is asymmetric with respect to a main centerline defined through the rivet and coincident with a axis of symmetry of the flange, when the flange is in a position ready to be operated to open the main removable panel; whereby the actuation of the flange when raising the heel is capable of breaking the main incision and the actuation of the flange when pressing down the flange is capable of breaking the ventilation incision.

The ventilation cord is separated from the main cord. The ventilation cord may be an elevated cord, or the ventilation cord may be a recessed cord. Preferably, the ventilation cord is tangential to a periphery of the central panel. The main cord has a longitudinal axis and the main cord is asymmetric about the longitudinal axis of the main cord. The ventilation incision and the button for the ends with cord cover all embodiments of the ventilation incision and the orientation and configuration of the button described for the embodiments of the recessed panel.

A procedure of opening and ventilating a beverage can begins with the end structure described in any of the preceding paragraphs. The procedure includes (i) operating the flange to press it against the main removable panel and to break the main incision, thereby forming a pouring opening; (ii) pivot the flange so that the flange is able to contact the ventilation button; and (iii) after the pivot stage, apply a downward force on the flange to provide a force on the button through a lower side of the flange at an initial point of contact and then apply a downward force to break vent the vent and open the vent hole so that the tab contact on the button moves backward on the button from the initial contact as the main removable panel pivots around the vent joint. The vent hole can be opened before or after the pouring opening is formed in step (i).

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

60

A combination of can and end of drink containing a can of carbonated, or other pressure, or an unpressurized can is also provided. The ventilated can end of the invention can use any can end described herein.

Brief description of the drawings

Figure 1 is a top view of a can end having some of the features of the present invention;

Figure 2 is a bottom side view of the can end of Figure 1; Figure 3 is a perspective view of the can end of Figure 1;

Figure 4 is a top perspective view of the can end of Figure 1, showing the tab operated to open the pour opening;

Figure 5 is a bottom perspective view of the can end of Figure 1 showing the ventilation opening actuated in its open position and having the main removable panel removed for clarity;

Figure 6 is a combination of can body and can end showing the flange over the opening of

ventilation with the ventilation hole in its non-activated state, without ventilation;

Figure 7 is an enlarged schematic view of a portion of the button in the vent hole;

Figure 8 is a perspective view of a tool insert used to form the incision portion

end ventilation shown in Figure 2;

Figure 9 is an enlarged plan view of a portion of an end vent portion shown in Figure 2;

Figure 10 is an enlarged plan view of a second embodiment of a portion of a vent portion of one end;

Figure 11 is an enlarged plan view of a third embodiment of a portion of a vent portion of one end;

Figure 12 is an enlarged plan view of a fourth embodiment of a portion of a vent portion of one end;

Figure 13A is an enlarged cross-sectional view of a flange and vent hole portion in accordance with the can end of the first embodiment with the flange rotated over the vent hole before the flange drive down;

Figure 13B is a cross-sectional view of the embodiment of Figure 13A showing the tab deflected downward and the incision of ventilation broken;

Figure 13C is a cross-sectional view of the embodiment of Figure 13A showing the flange in its fully actuated position and the removable vent panel fully open; Figure 14A is a top view of an embodiment of a can end having a central panel that includes cords according to the invention; Y

Figure 14B is a top view of another embodiment of a can end having a central panel that includes a bead and some of the features of the invention.

Detailed description of the illustrative embodiments

Referring to Figures 1 to 6, a beverage can end 10 formed of an aluminum alloy (preferably a 5000 series alloy) has a housing that includes a peripheral flange 12, a wall structure 14, a cord 16 annular, and a central panel 18. The can end 10 also includes a vent hole 40 formed in the central panel and a flange 70 fixed to the housing by a rivet. Figures 1 to 5 show the can end 10 in its non-sewn state. Figure 6 shows a combination of can end and can body containing a carbonated beverage.

The flange 12 is configured to be sewn to a flange of an aluminum can body 8, preferably by a conventional double seam. The combination of can end and can body, joined by a double seam, is shown in Figure 6. The wall structure 14 extends from the flange 12 and is preferably of a type found at the conventional ends of light weight. In this sense, the wall structure 14 tilts as shown in the Figures, and may also encompass curved portions, fins, kinks, double angles, and similar structures known in the field. Countersunk cord 16 is at the base of wall structure 14. The central panel 18 extends from the countersunk cord 16. The present invention also encompasses a panel or chamfer wall (not shown in the Figures) that merges with the inner wall of the cord 16 and the central panel 18.

The central panel 18 is flat, so it encompasses variations of a theoretical plane due to manufacturing tolerances and some inherent deviations from a perfect plane, and also structural features, such as engraved panels and cords described herein and the like. The term flat is used to cover both the non-stitched end and the curvature under normal pressurized containment conditions of a carbonated beverage. A rivet 22 is formed in the central panel 18 preferably in the center of the central panel 18. A main incision 26 is formed in the central panel 18 in an oblong shape and, preferably, defines a main removable panel 28, which forms a pouring opening in case of breakage of the Incision. The opposite ends of the incision 26 form a main joint 30 around which the removable panel pivots

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

60

during operation of the flange 70. The main incision 26 and the removable panel 28 are preferably conventional. For example, the removable panel may have an aspect ratio between 1.3 and 1.7. As shown in the Figures, the central panel 18 includes a panel 34 in main relief - that is, a recess in the panel 18. The present invention is not limited to the ends having a main counter relief panel unless required. specifically by the claims. Rather, the present invention encompasses ends that do not have a main counter relief panel, ends that may have cords formed in the central panel, as is known in the field.

The ventilation hole 40 includes a ventilation incision 42, a ventilation joint 46, an anti-fracture ventilation incision 48, and a button 50 protruding upwards. Preferably, the vent hole 40 is located within a vent relief or relief panel 62, which is formed in the main relief relief panel 34. The counter-relief panel 62 has a diameter that is preferably at least 0.5 inches (12.7 mm), preferably less than 0.7 inches (17.78 mm), and in the embodiment shown approximately 0.63 inches (16,002 mm). The counter relief panel 62 can stiffen the region around the vent hole 40 to improve the opening capacity. The depth of the panel 62 in vent relief can be chosen with the final objective of stiffening the panel and having a minimum loose metal without undue effort in the vent incision 42. In this sense, the size of the ventilation panel can be chosen from according to the parameters that people familiar with the technology of extreme shaping will understand when considering the present disclosure, taking into account the parameters of the dimensions and configuration of the ventilation incision, the size and configuration of the button, the relationship with other recesses or cords, depth of recesses, and the like.

The panel 62 in vent relief is preferably positioned such that the button 50 is not under the flange 70 or is not under a cord that protrudes downward, as described below, while the flange is in its configuration as manufactured or shipping or in the position in which it is configured to operate the main incision 26. In this regard, the button 50, especially the center or a contact portion of the button 50, may be outside the side of the tab 70 such that a downward force on the tab 70 does not apply a force on the button 50 until that a user pivots or rotates the flange 70 to align the contact surface of the flange with the button 50. In addition, the panel 62 in vent relief is preferably positioned distally from the main incision 26 while still being formed in the panel 34 of the main recess (although the counter relief panel is not required to be located in the main recess panel) such that the opening 40 can be located at or near the highest feasible point at the end when the can is tilted in a pouring position or when the can is horizontal and the end is vertical. Accordingly and as shown in Figure 1, an edge or side wall of the panel in vent relief may be tangential to or in part coextensive with a edge or side wall of panel 34 in main relief. In this configuration, the main recess panel 34 is asymmetric about its longitudinal centerline, which is different from conventional Stolle recess panels. The longitudinal axis of the main recess panel 34 is defined as a line through the rivet, approximately through the removable central panel, and through the bottom center of the edge of the main recess panel.

Figure 8 is a tool insert used to form the vent incision 42 of the vent hole 40. Figure 9 is an enlarged view of the structure that is partly formed by the tool insert of Figure 8. For convenience of illustration and dimensional accuracy and accuracy, the description of the tool insert and the corresponding structure are provided together. , and it is understood that the description of the tool is applied to the description of the ventilation structure formed from the tool. A premium designation (') is used to refer to the structure in the tool, as opposed to the corresponding structure at one end, as necessary.

As best shown in Figure 9, the ventilation incision 42 includes a longitudinal central line CL that is parallel to the joint 46. The ventilation incision 42 includes a pair of opposite ends 45a. On each side, the incision 42 is fused from the end 45a through a transition 45b with the first and second curved portions 45c and 45d, which coincide on one side 45e, which is preferably straight. Preferably, the radii of the curved transition portions 45c and 45d are approximately 0.083 inches (2.1082 mm). R1 in Figure 9 identifies the radii 45d.

Button 50 is formed within incision 42. For convenience and in accordance with industry custom, the dimensions of the tool are provided here and it is understood that the dimensions at the finished end will follow from the dimensions of the tool , with some variation in manufacturing deviations, such as elastic recovery or tool wear. For precision in the claims, the dimensions are applied to the end structure and can be measured at the end.

Button 50, as schematically shown in Figure 7, is raised from the counter-relief panel 62 of the central panel 18 through a rounded or curved transition 52. If the ventilation incision is formed in the main recess of the central panel or in the uncut portion of the central panel, the curved transition 52 is fused from the main recess or portion without recesses. The curved transition 52 merges into a side wall 54 of the button that extends to reach an upper portion 56 of the button. The curved transition 52 extends between the point 53a inwardly that merges into the side wall 54 and the point 53b outwardly that merges with the central panel 18 or,

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

60

more specifically, panel 62 in relief. Preferably, the curved transition 52 has a radius R2 (Figure 7) that is between 0.005 inches (0.127 mm) and 0.020 inches (0.508 mm), more preferably between 0.0075 inches (0.19905 mm) and 0.0115 inches (0.2921 mm), and most preferably about 0.0095 inches (0.2413 mm).

The inventors have found that the choice of the distance between the incision and the side wall 54 of the button is useful in some embodiments in which it allows the ventilation opening to be opened in a controllable and repeatable manner. The distance can be measured from point 53b to the outside of the radius R2 to the inner wall of the incision 42, as best shown in Figure 7 by the distance D3. The distance D3 is measured at the point where the ventilation incision is closest to the side wall of the button, referred to as the proximal point 57, as explained below. Figure 9 shows the button 50 and illustrates the dimension D3 that is measured from point 53b at the circumferential position identified by the proximal point 57.

Preferably, the dimension D3 is between -0.010 inches (i.e. minus 0.010 inches) (-0.254 mm) and 0.020 inches (0.508 mm). The negative range means that the inner wall of the ventilation incision 42 can be placed on or in the transition 52 curve of the button or the side wall of the button - that is, on the inward side (ie, to the right as orient in Figure 7) from point 53b outwards. Because the range of D3 covers zero, the inner wall of the vent incision 42 may be at point 53b where the curved transition 52 ends or merges with the central panel 18. And the dimension encompasses a ventilation incision that is up to 0.020 inches (0.508 mm) away from point 53b (that is, outward from the button). More preferably, the dimension D3 is between -0.006 inches (-0.1524 mm) and 0.015 inches (0.381 mm), more preferably between -0.003 inches (-0.0762 mm) and 0.013 inches (0.3302 mm), and most preferably between -0.001 (-0.0254 mm) or 0.000 inches (0 mm) and 0.006 inches (0.1524 mm). Measured through the same line as D3, the distance from the center line of the button to the inside edge of the incision 42 is between -, 005 (-0,127 mm) and, 040 inches (1,016 mm) plus a means of D1, so which represents the radius R2 plus the dimension D3 plus the radius of the button. For a button diameter of 0.125 inches (3.302 mm), the dimension of the center line of the button to the inside edge of the incision 42 is therefore between 0.060 (1,524 mm) and 0.105 inches (2,667 mm).

Button 50 preferably has a diameter between 0.100 inches (2.54 mm) and 0.188 inches (4.572 mm), more preferably, between about 0.115 inches (2.921 mm) and 0.15 inches (3.81 mm), and more preferably approximately 0,130 inches (3,302 mm). The diameter of the button 50 is represented as D1 in Figures 7 and 9. To facilitate measurement, D1 (and D13 below) is measured on the button 50 at point 53a and opposite point 53a. Conceptually, the curve transition 52 can be considered as part of the button 50 although the curve transition 52 is excluded from the measurement of D1 in the embodiments shown. The button 50 as shown in the Figures is circular in the top view, but the present invention is not limited to the circular buttons. The button 50 is illustrated in the Figures having a straight side wall 54, and the present invention encompasses curved side walls and upper parts and a combination of curves and straight portions that form the side wall 54 of the button and the top part 56 of the button. Therefore, the present invention encompasses the formation of the ventilation incision anywhere in the side wall of the button. The use of the expression "side wall of the button" is intended to cover the entire surface of the button.

A proximal point 57 is defined as the point in the incision 42 that is closest to the side wall 54 of the button - specifically, closer to the outer radius point 53b of the button. To increase the efficiency of force transfer through the button 50 to the incision 42, in the embodiment shown in Figure 9, the proximal point 57 is located on the side of the button opposite the ventilation joint 46. Furthermore, the ventilation joint 46 is preferably in front of the rivet 22 in relation to the button 50, as shown in Figure 2, the present invention also encompasses the ventilation joint near the rivet 22 instead of in front of it, as well as in other locations.

Dimension X is the distance from the center of the button to the lateral ends of the incision 42 'along the longitudinal centerline CL. Dimension Y is the distance from the center of the button to the ventilation joint 46. The dimension Z is the distance from the center of the button to the proximal point of the incision 42 opposite the joint 46 (ie, to the proximal point 57). Alternatively, the Z dimension can be defined as parallel and opposite to the Y dimension (as for example in the embodiment shown in Figure 9). For the particular dimensions below, the diameter D1 of the button 50 is 0.130 inches (3.302 mm), although D1 and the dimensions for the dimensions X, Y, and Z may vary according to certain design parameters. The inventors assume that various configurations of ventilation incisions would achieve reliable opening characteristics. In this respect, preferably, the dimension X is greater than Z and less than 5Z. Preferably dimension Y is greater than 0.5Z and less than 3Z. More preferably, the X dimension is greater than 1.2Z and less than 3Z, and the Y dimension is greater than 0.75Z and less than 2Z, and more preferably the Y dimension is greater than 0.9Z and less than 1.5Z . The Z dimension is preferably between 0.0625 (1.5875 mm) and 0.090 inches (2.286 mm), and more preferably between 0.065 (1.651 mm) and 0.085 inches (2.159 mm), and more preferably between 0.068 (1.7272 mm ) and 0.078 inches (1.9812 mm). In the embodiment shown in Figure 2, X is approximately 0.125 inches (3.81 mm) and Z is approximately 0.083 inches (2.1082 mm) and Y is approximately 0.117 inches (2.9718 mm), each with the button 50 described herein. It is clear that the present invention encompasses a ventilation configuration that is symmetrical and one that is asymmetric.

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

60

The present invention encompasses a ventilation incision having other dimensions. For example, the ventilation incision and the button 50 can be configured such that the X dimension is approximately 0.125 inches (3.81 mm), the Y dimension is approximately 0.082 inches (2.0828 mm), the dimension Z is approximately 0.067 inches (1.7018 mm), and the diameter D1 of the button is approximately 0.130 inches (3.302 mm), a configuration illustrated in Figure 10. In another example, the ventilation incision and the button 50 they can be configured in such a way that the X dimension is approximately 0.183 inches (4.6482 mm), the Y dimension is approximately 0.108 inches (2.7432 mm), the Z dimension is approximately 0.083 inches (2.1082 mm), and the diameter D1 of the button is approximately 0,130 inches (3,302 mm), a configuration illustrated in Figure 11. In the embodiment of Figure 11, the width of the ventilation incision 42 is large in relation to the width of the panel 62 in counter relief of such a mane ra that a portion of the anti-fracture incision is omitted. A circular ventilation incision (not shown in the Figures) is also contemplated with a button as described herein, a circular ventilation incision having an X dimension of approximately 0.083 inches (2.1082 mm), a Y dimension of approximately 0.133 inches (3.3782 mm), a Z dimension of approximately 0.083 inches (2.1082 mm), and a button dimension of approximately 0.125 inches (3.302 mm).

The flange 70 is an elongate, elongated flange that includes a nose 72, an elongated body 74, and a heel 76. An island of 78 rivet extends under the main portion of the body 74 and is flat against the central panel. Preferably, the opposite sides of the body 74 are parallel or approximately parallel. The rivet 22 extends through a hole in the rivet island 78 to fix the flange and the housing to each other. As is conventional, the flange 70 includes a joint 80 around which the flange pivots during the conventional drive to form the main opening.

A cord 82 is formed in flange body 74 near heel 76, as shown directly in Figure 4 and shown negatively in the other Figures. The cord 82 extends downwardly with respect to the surrounding portion of the body 74 and is preferably elongated. Cord 82 may be curved or straight in plan view. Preferably, the cord 82 is sized and positioned such that at least a portion of the cord 82 and preferably the entire length of the cord 82 is able to enter the open vent hole 40 when the removable vent panel 44 is operated, such as It is best shown in Figure 13C. The present invention encompasses configurations of the central panel, flange, and vent hole in which a flange cord or flange structure does not enter the open vent hole.

Figure 12 illustrates a second embodiment of a vent hole, designated as the vent hole 140 for one end 110 of the second embodiment. The housing, the flange, and the recesses of the end 110 preferably have a structure identical to that of the end 10 of the first embodiment but for the vent hole. The ventilation hole 140 includes a ventilation incision 142, a removable ventilation panel 144, a ventilation joint 146, an anti-fracture ventilation incision 148, and a button 150. Preferably, the ventilation hole 140 is located within a recess or panel 62 in relief, which is formed in panel 34 in main relief, whose structure has been described above.

The ventilation incision 142 includes a longitudinal central line CL that is perpendicular to the joint 146. The ventilation incision 142 includes an end 145a, which is distal to the joint 146. On each side, the incision 142 extends from the end 145a through straight sides 145b towards the joint 146. The dimensions of the incision 142 are preferably X of approximately 0.133 inches (3.6322 mm), Y of approximately 0.101 inches (2.5654 mm), and Z of approximately 0.083 inches ( 2,1082 mm). The Z dimension is preferably between 0.2 X and 1X, and more preferably between 0.33x and 0.83X. The Z dimension is preferably between 0.5Y and 1.33Y, and more preferably between 0.67Y and 1.1Y

Button 150 preferably has the same structure as described for button 50 of the ventilation hole of the first embodiment, including a diameter of approximately 0.125 inches (3.302 mm). Preferably, the button 150 is located closer to the joint 146 than the end 145a of the incision and in this sense is outside the center. A proximal point 157 is defined as the point in the incision 142 that is closest to the button 150 and defines a distance in between as D13. Due to the configuration of the incision 142, the ventilation hole of the second embodiment has a pair of points 157 proximal on opposite sides of button 150.

Preferably, the dimension D13 is between -, 010 inches (i.e. minus 0.010 inches) (-0.254 mm) and 0.020 inches (0.508 mm). More preferably, dimension D13 is between -0.006 inches (-0.1524 mm) and 0.015 inches (0.381 mm), more preferably -0.003 inches (-0.0762 mm) and 0.013 inches (0.3302 mm), and most preferably between -0.001 (-0.0254 mm) or 0.000 inches (0 mm) and 0.006 inches (0.1524 mm). As shown in Figure 12, D13 is measured from a marked point 153b corresponding to the same point 53b defined in Figure 7.

In its remainder, as manufactured, the button 50 (and 150) is located outside the flange 70 - that is, a vertical projection of the sides of the flange body 74 does not significantly cover any part of the button 50,150. Therefore, if the flange 70 is pressed while the flange 70 is in its idle state, the flange does not press the button 50, thus preventing accidental breakage of the ventilation incision 42 during handling and transport of the ends. sewn and full and sewn can.

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

Figures 14A and 14B illustrate beverage can ends using raised or recessed cords. The carcass structure, the main incision, the ventilation incision, the flange, and the rivet in the embodiments shown in Figures 14A and 14B are as described above with respect to the embodiments shown in Figures 1 to 12. The First end 210a with cord includes a flange 212, a wall structure 214, and an annular bead 216 which are as described with respect to end 10 of the first embodiment. The central panel 218a of the end 210a includes a vent hole 240, a flange 270 fixed to the housing by a rivet 222.

A main incision 226 is the same as that described with respect to the main incision 26 of the first embodiment. A central CL line is defined through the rivet 222 and through a central line of the flange 270 or, if the flange 270 is not in a conventional position ready to be operated to open the removable panel, the central CL line bisects the area of discharge opening formed by the main incision 226. A transverse central TL line is normal to the main central CL line and through the rivet 222.

A main raised bead 288a includes a first outward flared end 289 that is located at the rear of the transverse central TL line, and preferably on the articulation side of the main central CL line and on the opposite side of the CL line of vent hole 240b. From the end 289b, the cord 288a curves inward toward the main central line CL and then outwardly relative to the line CL, after which the cord 288 follows the contours of the main incision 226 (i.e., for the largest part of the main incision 226, the cord 288a is equally spaced apart from incision 226).

The cord 288a continues to bend around the main incision 226 to terminate at the second end 290, which is forward (then in the orientation of Figure 14A) and separated from the vent hole 240. The second end 290 includes a flared outward shape (ie, in relation to the center line CL) above an inward curve. The cord 288a is asymmetric with respect to the main central CL line, since in the embodiment shown in Figure 14A, the second end 290 is forward (ie, then in the orientation of Figures 14A) of the first end 289

A ventilation cord 299, which may be either an elevated cord or a lowered cord, and preferably circular, surrounds a ventilation incision 242. The shape, orientation and location of the ventilation incision and the corresponding button arrangement may be as described in any of the embodiments described for the other embodiments disclosed herein.

A cord end 210b of the second embodiment includes a flange 212, a wall structure 214, and an annular bead 216 which are as described with respect to end 10 of the first embodiment. The central panel 218b of the end 210b includes a vent hole 240b. A flange 270 fixed to the housing by a rivet 222.

A main incision 226 is the same as that described with respect to the main incision 26 of the first embodiment. A central CL line is defined through the rivet and through a central line of the flange 270 or, if the flange 270 is not in a conventional position ready to be operated to open the removable panel, the central CL line bisects the opening area of discharge formed by the main incision 226. A transverse central TL line is normal to the main central CL line and through the rivet 222.

A main raised bead 288b includes a first outward flared end 289 that is located at the rear of the transverse central TL line, and preferably on the articulation side of the main central CL line and on the opposite side of the CL line of vent hole 240b. From the end 289, the cord 288b curves inward toward the main central line CL and then outwardly relative to the line CL, after which the cord 288 follows the contours of the main incision 226 (i.e., for the largest part of the main incision 226, the cord 288b is equally spaced apart from main incision 226).

The cord 288b curves around the main incision 226 and continues to bend inwardly to form a central part 291, which is forward (then in the orientation of Figure 14A) and separated from the vent hole 240b. The cord 288b then extends outwardly towards the ventilation incision 242 and forms a curved, hooked portion 292 that extends backward from the ventilation incision 242. Preferably, as shown in Figure 14B, the curved portion 292 extends to the inner side (i.e., between the ventilation incision 242 and main centerline CL) and forward to terminate at the second end 293 of the cord.

The cord 288b can be a raised cord along its extension from the first end 289 through the second end 293. Alternatively, the cord 288b can transition from a raised cord that extends around the main incision 226 to a cord. recessed approximately in a transition, indicated in Figure 14B with the reference number 301 near the central part 291. The shape, orientation and location of the ventilation incision and the corresponding button arrangement may be as described in any of the other embodiments described herein.

The cords 288a and 288b are preferably symmetric or approximately symmetrical in cross-section and can be formed in a conventional configuration by conventional procedures, as will be understood by the

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

people familiar with extreme technology. The specific dimensions and designs of the cords 288a and 288b and the ventilation incision 242 can be chosen as they achieve the desired tension through the ventilation incision 242 to improve the pressure performance and the opening performance.

To open the beverage container, a user grabs and lifts heel 76 with a finger. In response to the elevation of the heel 76, the flange 70 deforms around the joint 80 (which is best shown in Figure 4) such that the nose 72 of the nose is brought into contact with the main removable panel 28. The user continues to raise the heel 76 until the main incision 26 is broken to form the main pour opening. Preferably, the process for opening the main pour opening is conventional.

A user then pushes the heel 76 downward so that the tab 70 is close to its original position. The flange 70 can then be pivoted around the rivet 22 until the flange 82 of the flange aligns with the vent button 50, as shown in Figure 6. Preferably, the cord 82 contacts the button 50 in a location that is displaced from a center of the button in a direction towards the proximal point 57 (in the first embodiment), which in turn is preferably located on the opposite side of the button 50 of the ventilation joint 46.

As illustrated in Figure 13A, the cord 82 first contacts the button 50 at a point A that is oriented relative to the proximal point 57 as described above. Since a downward force is applied by the user by pushing down on the flange 70, the ventilation incision 42 is initially broken, as shown in Figure 13B near point 57. The orientation of the proximal point 57 (for the first embodiment ) and the initial contact point A, and the geometry of the button 50 and the ventilation incision 42, promote efficient and reliable opening. The elongated form of removable ventilation panel 44 provides a greater area of ventilation (i.e., the area of the opening between the edge of the removable ventilation panel 44 relative to the counter-relief panel 62 that does not deviate in case of breakage of ventilation incision 42) compared to a circular incision shape. After the initial rupture, the removable ventilation panel 44 pivots around the joint 46 in such a way that the subsequent downward movement of the cord 82 changes the contact point of the initial point A backwards (as it is oriented along the line center of the flange) to the B contact point and, finally, further back to get in touch with the C point, shown in Figure 13C. In another, the point of contact between the flange and the button moves backward as the present embodiment of the vent is actuated. The rolling or sliding of the contact points A to C towards the ventilation joint during the opening procedure increases the angular deflection of the removable ventilation panel 44, which is beneficial for the opening area. In embodiments where the cord 82 is sized to enter the ventilation opening, the magnitude of the ventilation opening (as manifested by a greater angular deflection around the hinge enabled by the cord entering the opening) is improved for better ventilation performance.

After the rupture of the ventilation incision 42 near the proximal point 57, the rupture propagates in two directions on the button 50 until reaching the opposite ends of the ventilation incision 42 as the removable ventilation panel 44 deviates down.

In the ventilation hole 140 of the second embodiment, the contact point A is not in line with the proximal point 157, but rather is 90 degrees from it around the circumference of the button. After the initial rupture, the contact points A to C (not shown in the Figures) are further, by rolling or sliding, backward (away from the rivet) or towards the joint vent hole as described by general above. Probably, the ventilation incision 142 is broken first near one of the proximal points 157. The rupture propagates in two directions until it reaches the opposite ends of the ventilation incision 142 as the removable ventilation panel 44 deflects downwards. Alternatively, if sufficient energy is accumulated in removable ventilation panel 144 before the initial rupture, the incision 142 may initially be broken at points that are 90 degrees from the proximal 157 points or at several locations simultaneously or almost simultaneously.

The term "between" in the claims includes interval limits. For example, if the claim cites between dimensions A and B, the claim covers the dimension that is exactly A and exactly B, as well as their equivalents and approximations.

Various characteristics of a beverage can end and a combination of can end and can body have been described. The present invention is not limited to any combination of the features described herein. Rather, the claims should be interpreted according to their total appropriate scope. The explanation of the characteristics is based on a person familiar with the technology of aluminum beverage cans for understanding, such as the technology of forming and sewing ends, forming the recess, the cords, and the incisions at the ends, and the like .

Claims (15)

10 fifteen twenty 25 30 35 40 Four. Five fifty 1. An end (210a) of beverage can comprising: a peripheral flange (212) capable of joining a can body (8) by sewing; a wall structure (214) radially into the flange; a central panel (218a); a main incision (226) defining a main joint (30) and a main removable panel (28) that is capable of opening in case of breaking the incision to form a pour opening; a flange (270) coupled to the central panel by means of a rivet (222), the flange having a nose (72) capable of contacting a portion of the main removable panel for rupture of the main incision, a body (74), and a heel (76) formed opposite the nose, the heel being configured to be grasped by a user; a vent hole (240) that includes: a ventilation incision (242) defining a removable ventilation panel (244) and a ventilation joint (46, 146) located approximately between the opposite ends of the ventilation incision; and a button (50,150) protruding upwards located in the removable ventilation panel; whereby the actuation of the flange when raising the heel is capable of breaking the main incision and the actuation of the flange when pressing down on the flange is capable of breaking the ventilation incision, characterized in that it includes a raised main cord (288a) having a first end (289) located on the heel side of the flange and extending around the main removable panel to a second end (290), said first and second ends being separated; Y an elevated or lowered ventilation cord (299) located above the ventilation incision; wherein the main cord is separated from the ventilation cord, and the main cord is asymmetric with respect to a main central line (CL) defined through the rivet and coincident with an axis of symmetry of the flange when the flange is in a position ready to be operated to open the main removable panel. 2. The beverage can end of claim 1, wherein the ventilation cord is a raised cord. 3. The beverage can end of claim 1, wherein the ventilation cord surrounds the ventilation incision and is separated from the main cord. 4. The beverage can end of claim 1, wherein a periphery of the ventilation cord is tangential to a periphery of the central panel. 5. The beverage can end of claim 1, wherein the main cord has a longitudinal axis and the main cord is asymmetric with respect to the longitudinal axis of the main cord. 6. The beverage can end of claim 1, wherein the vent button is located outside the flange, while the flange is positioned to drive the main incision and the cord of the vent panel is located close to a peripheral edge of the central panel distal to the rivet. 7. The beverage can end of claim 1, wherein the ventilation incision is located on the button or has a distance D3 or D13 from the side wall of the button, measured at a point where the ventilation incision is closer to the side wall of the button, of no more than 0.508 mm in such a way that the downward force transmitted from the heel of the flange to the button breaks the ventilation incision, thereby driving the flange when raising the heel is capable of breaking the main incision and the actuation of the flange by pressing down on the flange is capable of breaking the ventilation incision, optionally in which the distance D3 or D13 is not less than -0.254 mm, preferably between - 0.1524 mm and 0.381 mm, more preferably between 0 mm and 0.1524 mm, and, optionally, in which in response to the downward pressure applied on the flange, the ventilation incision is initially broken at a point in which the ventilation incision is closer to the side wall of the button. 8. The beverage can end of claim 7, wherein the rupture of the incision propagates over the removable vent panel in two directions to the vent joint. 9. The beverage can end of claim 7, wherein the ventilation incision is between approximately 1,524 mm and approximately 2,667 mm from the center line of the button, optionally, wherein a radius of a curved transition between the button and the central panel is between about 0.127 mm and about 0.508 mm, preferably between about 0.1990 mm and about 0.2921 mm, more preferably about 0.2413 mm, and optionally, wherein the button has a diameter of between about 2.54 mm and about 4.572 mm, preferably between about 2.921 mm and about 3.81 mm, more preferably about 3.302 mm. 5 10 fifteen twenty 25 30 35 10. The beverage can end of claim 7, wherein the closest location of the vent incision to the side wall of the button is one of: opposite the vent joint, not opposite the vent joint and , optionally, in which the ventilation joint is in one of: opposite the rivet, on one side of the button next to the rivet. 11. The beverage can end of claim 7, wherein the tab has a contact element that is configured to contact the button, wherein the contact element of the tab is optionally a protruding cord down, in which the flange of the flange is optionally elongated and sized to allow the flange of the flange to enter a ventilation opening formed after the rupture of the ventilation incision and in which the flange of the flange is curved optionally in a radius that is approximately equal to the distance between a center of the rivet and the vent button. 12. The beverage can end of claim 1, wherein the flange is configured such that the initial contact by a flange of the flange against the button is at a location on the button that is close to where the incision ventilation is closest to the side wall of the button. 13. The beverage can end of claim 1, wherein, after initial contact, subsequent contact by the flange of the flange against the button moves from the initial contact point backward on the button towards the joint of ventilation as the removable ventilation panel pivots around the ventilation joint. 14. The beverage can end of claim 1, wherein the vent hole defines: an X dimension from a button center to the lateral ends of the ventilation incision along a central ventilation line, a dimension Y from the center of the button to the ventilation joint, and a dimension Z from the button center to a point of the proximal ventilation incision that is the point in the ventilation incision that is closest to the button, the X dimension is greater than Z and less than 5Z and the Y dimension is greater than 0.5Z and less than 3Z, preferably, in which the X dimension is greater than 1.2Z and less than 3Z and the Y dimension is greater than 0.75Z and less than 2Z, more preferably, in which the Y dimension is greater than 0.9Z and less than 1.5Z, and optionally in which the Z dimension is between 1.5875 mm and 2.286 mm, preferably between 1,651 mm and 2,159 mm, more preferably between 1,7272 mm and 1.9812 mm. 15. The beverage can end of claim 1, wherein the vent hole defines: an X dimension from a button center to the lateral ends of the ventilation incision along a central ventilation line, a dimension Y from the center of the button to the ventilation joint, and a dimension Z from the button center to a point of the proximal ventilation incision that is the point in the ventilation incision that is closest to the button, in which the Z dimension is between 0.2X and 1x and the Z dimension is between 0.5Y and 1.33Y, preferably, in which the Z dimension is between 0.33x and 0.83X and the Z dimension is between 0.67Y and 1.1Y, or in which the Z dimension is between 0.5 and 0.81 of the diameter D1 of the button, preferably between 0.55 and 0.7 of the diameter D1 of the button, more preferably about 0, 6 of the diameter D1 of the button.