A method of forming a carrier ring on a metal article having an open end and a sidewall extending therefrom. The method includes contacting an inner surface of the sidewall with an inner roller to form a protrusion and contacting an outer surface of the sidewall with an outer roller to form a first groove positioned below the protrusion. The protrusion forms a gap therein. The method further includes contacting a portion of the outer sidewall with at least one second outer roller to form a second groove below the protrusion. The method further includes contacting a portion of the outer sidewall with at least one third outer roller to flatten the protrusion, such that the gap is substantially reduced or eliminated. The flattened protrusion forms the carrier ring.

The present invention relates generally to a container that may be sealed and reclosed with a threaded closure. More specifically, the present invention relates to methods of manufacturing a metallic container having an opening with inwardly facing threads that are formed after a threaded closure is inserted at least partially into the opening. The container opening may be selectively sealed and reclosed with the threaded closure which releasably engages the container threads.

The present invention relates generally to a container that may be sealed and reclosed with a threaded closure. More specifically, the present invention relates to methods of manufacturing a metallic container having an opening with inwardly facing threads that are formed after a threaded closure is inserted at least partially into the opening. The container opening may be selectively sealed and reclosed with the threaded closure which releasably engages the container threads.

A metallic container includes a metallic elongated body that provides an interior cavity. The body has a non-circular perimeter wall, a bottom and a top. The perimeter wall is joined to the bottom at one end and to the top at an end opposite the bottom. The top includes an opening having a lip. The perimeter wall extends in a longitudinal direction to provide a height. The perimeter wall includes a cross-section normal to longitudinal direction that provides a major diameter and a minor diameter. A ratio of the major diameter to the minor diameter is 1.3 to 2.0. A valve assembly is operatively secured to the lip over the opening to enclose the cavity.

A metallic container includes a metallic elongated body that provides an interior cavity. The body has a non-circular perimeter wall, a bottom and a top. The perimeter wall is joined to the bottom at one end and to the top at an end opposite the bottom. The top includes an opening having a lip. The perimeter wall extends in a longitudinal direction to provide a height. The perimeter wall includes a cross-section normal to longitudinal direction that provides a major diameter and a minor diameter. A ratio of the major diameter to the minor diameter is 1.3 to 2.0. A valve assembly is operatively secured to the lip over the opening to enclose the cavity.

A tab for a container such as a food or beverage can. In some aspects, the tab includes a tab body comprising a nose, a handle, and a medial portion that extends between and couples the nose and the handle. The handle may define a central opening. The handle may include an outer curl having a first edge that is folded along a bottom surface of the tab body and that is directed toward the medial portion. The handle may include an inner curl extending from the central opening. The inner curl may include a second edge that is folded along the bottom surface of the tab body and that is directed away from the medial portion. A distance between the first edge and the second edge may be less than 0.5 mm.

A tab for a container such as a food or beverage can. In some aspects, the tab includes a tab body comprising a nose, a handle, and a medial portion that extends between and couples the nose and the handle. The handle may define a central opening. The handle may include an outer curl having a first edge that is folded along a bottom surface of the tab body and that is directed toward the medial portion. The handle may include an inner curl extending from the central opening. The inner curl may include a second edge that is folded along the bottom surface of the tab body and that is directed away from the medial portion. A distance between the first edge and the second edge may be less than 0.5 mm.

A method of forming a carrier ring on a metal article having an open end and a sidewall extending therefrom. The method includes contacting an inner surface of the sidewall with an inner roller to form a protrusion and contacting an outer surface of the sidewall with an outer roller to form a first groove positioned below the protrusion. The protrusion forms a gap therein. The method further includes contacting a portion of the outer sidewall with at least one second outer roller to form a second groove below the protrusion. The method further includes contacting a portion of the outer sidewall with at least one third outer roller to flatten the protrusion, such that the gap is substantially reduced or eliminated. The flattened protrusion forms the carrier ring.

A can shell includes a center panel. An inclined panel wall extends at a downward angle from the center panel. An annular countersink is formed around the inclined panel wall and includes an inner countersink wall and an outer countersink wall. A countersink base is formed at a bottom end of the inner countersink wall and a bottom end of the outer countersink wall. A chuck wall extends from the outer countersink wall. The inner countersink wall and the outer countersink wall are generally parallel between the countersink base and the inclined panel wall and the chuck wall. A curl extends radially outwardly from the chuck wall. The countersink has a depth of between 0.265 and 0.280 inches from the uppermost surface of the curl and a depth of between 0.085 and 0.11 inches from the center panel.

A can shell includes a center panel. An inclined panel wall extends at a downward angle from the center panel. An annular countersink is formed around the inclined panel wall and includes an inner countersink wall and an outer countersink wall. A countersink base is formed at a bottom end of the inner countersink wall and a bottom end of the outer countersink wall. A chuck wall extends from the outer countersink wall. The inner countersink wall and the outer countersink wall are generally parallel between the countersink base and the inclined panel wall and the chuck wall. A curl extends radially outwardly from the chuck wall. The countersink has a depth of between 0.265 and 0.280 inches from the uppermost surface of the curl and a depth of between 0.085 and 0.11 inches from the center panel.