Full aperture beverage end
AssigneeCrown Packaging Technology, Inc.
InventorsChristopher Paul Ramsey, Garry Richard Chant, Andrew Robert Lockley, Brian Fields, Martin John Watson, Eleanor Rachel Ann Hyde
Life of this patent
Estimating the term…
Abstract
A full aperture beverage end has a center panel, a countersink surrounding the center panel, a main score arranged in proximity to the countersink to define a removable aperture panel and a vent score. The beverage end is adapted for use with products that are pressurized to over 30 psi (200 kPa) when opened, and during opening the vent score is adapted to sever first, controlling the pressure differential between the external surface and internal surface of the center panel, thereby allowing the main score to tear in a controlled and reliable manner.
Claims22
A full aperture beverage end comprising:
- a center panel,
- a countersink surrounding the center panel,
- a main score formed in the center panel and arranged in proximity to the countersink to define a removable aperture panel,
- a rivet, the rivet defining a rivet center,
- a tab affixed to the center panel by the rivet, the tab having a nose and a heel, the tab defining a primary reference line that extends from the nose to the heel and through the rivet center, the tab further defining a transverse reference line that is perpendicular to the primary reference line and extends through the rivet center, and
- a vent score formed in the center panel, the vent score including a pair of lateral portions that extend parallel to the transverse reference line and are disposed forward of the transverse reference line towards the nose of the tab by a first distance that is between 0 and 0.050 inches (0 mm and 1.3 mm), the vent score further including a pair of side portions that extend from the lateral portions, such that each side portion extends inwardly towards the primary reference line and rearwardly relative to the transverse reference line towards the heel of the tab by a second distance that is between 0.15 and 0.4 inches (3.8 and 10.2 mm) and such that the side portions are oriented at an angle relative to the primary reference line that is between −30 and +30 degrees,
- whereby the end is formed of 5000 series aluminum and adapted for use with products that are pressurized to over 70 psi and such that during opening the vent score is adapted to sever first, controlling the pressure differential between the external surface and internal surface of the center panel, thereby allowing the main score to tear in a controlled and reliable manner.
A full aperture beverage can rated for internal pressure of over 70 psi, the beverage can comprising:
- a can body;
- and
- an end formed of 5000 series aluminum, seamed onto the can body, including a center panel and a main score and formed in the center panel,
- a rivet, the rivet defining a rivet center, and
- a tab affixed to the center panel by the rivet, the tab has a nose and a heel, the tab defining a primary reference line that extends from the nose to the heel and through the rivet center, the tab further defining a transverse reference line that is perpendicular to the primary reference line and extends through the rivet center, and
- a vent score formed in the center panel, the vent score including a pair of lateral portions that extend parallel to the transverse reference line and are disposed forward of the transverse reference line towards the nose of the tab by a first distance that is between 0 and 0.050 inches (0 mm and 1.3 mm), the vent score further including a pair of side portions that extend from the lateral portions, such that each side portion extends inwardly towards the primary reference line and rearwardly relative to the transverse reference line towards the heel of the tab by a second distance that is between 0.15 and 0.4 inches (3.8 and 10.2 mm) and such that the side portions are oriented at an angle relative to the primary reference line that is between −30 and +30 degrees.
Dependencies are inferred from the claim text.