Abstract: An end member for a container. The end member has a central panel wall with a public side and an opposing product side. The public side includes a means for opening a frangible panel segment. The member also has a score groove and a coin segment. The score groove is located on the public side of the end member and defines an outer perimeter of the frangible panel segment and separates the frangible panel segment from a non-frangible portion of the public side. The coin segment is adjacent the score groove and places a compressive stress on a portion of the end member located between the coin segment and the score groove wherein an upper plane and a lower plane are formed and separated by the score groove. The lower plane comprises a portion of the frangible panel segment adjacent the score groove.

Abstract: An end member for a container. The end member has a central panel wall with a public side and an opposing product side. The public side includes a means for opening a frangible panel segment. The member also has a score groove and a coin segment. The score groove is located on the public side of the end member and defines an outer perimeter of the frangible panel segment and separates the frangible panel segment from a non-frangible portion of the public side. The coin segment is adjacent the score groove and places a compressive stress on a portion of the end member located between the coin segment and the score groove wherein an upper plane and a lower plane are formed and separated by the score groove. The lower plane comprises a portion of the frangible panel segment adjacent the score groove.

Abstract: Ends for cans are made in a single press, eliminating the need for separate shell and conversion presses, balancers, track work, and other equipment, as compared to existing can end manufacturing systems, while reducing floor space and capital investment requirements for installation of a new can end line. A sheet of end material or stock is introduced into the press and fed to a series of work stations. The sheet is maintained in a substantially continuous and void free state as the work stations perform forming operations on the sheet of material to form one or more ends therein. After the forming operation is complete, the end is ejected from the press. The maintenance of the sheet of material in a substantially continuous and void free state permits precise movement of the sheet through the press, and registration of the sheet relative to the tooling in the press.

Abstract: Ends for cans are made in a single press, eliminating the need for separate shell and conversion presses, balancers, track work, and other equipment, as compared to existing can end manufacturing systems, while reducing floor space and capital investment requirements for installation of a new can end line. A sheet of end material or stock is introduced into the press and fed to a series of work stations. The sheet is maintained in a substantially continuous and void free state as the work stations perform forming operations on the sheet of material to form one or more ends therein. After the forming operation is complete, the end is ejected from the press. The maintenance of the sheet of material in a substantially continuous and void free state permits precise movement of the sheet through the press, and registration of the sheet relative to the tooling in the press.

Abstract: A stay-on-tab container end having a panel wall with a tab attached by a rivet and having a tear panel. The tear panel being defined by a frangible score with a first end and a second end and a non-frangible hinge segment. A second groove is formed in the panel wall with a tail portion extending from the tear panel through the hinge segment. The second groove tail portion has a reduced residual differential compared to the frangible score residual. Also, the tail portion includes a curved terminal end that partially surrounds the second end of the score.

Abstract: A stay-on-tab container end having a panel wall with a tab attached by a rivet and having a tear panel. The tear panel being defined by a frangible score with a first end and a second end and a non-frangible hinge segment. A second groove is formed in the panel wall with a tail portion extending from the tear panel through the hinge segment. The second groove tail portion has a reduced residual differential compared to the frangible score residual. Also the tail portion includes a curved terminal end that partially surrounds the second end of the score.

Abstract: The present invention provides a stay-on-tab end closure having a displaceable tear panel defined by a frangible score with a sloping segment and a non-frangible hinge segment. A curvilinear bead is formed entirely in an exposed area of the central panel formed by a void region of the tab webbing. The nose of the tab has a generally asymmetric shaped outer edge with a second portion extending further over the tear panel toward the curvilinear transition zone of the score. The invention further provides a tab with an asymmetrical thickness, with a thickened portion adjacent the second scoreline segment, and further provides a bead segment positioned under a side portion of the tab nose adjacent the second segment of the score. The present invention also provides an end with a hinge region of the tab adapted to bend at a hinge line, the hinge line intersecting the central longitudinal axis of the tab at an oblique angle.

Abstract: The product and method of manufacturing a tab having a rivet island window and adapted to be secured to a container end, including the steps of forming a first dimple at a first end position of the window and a second dimple at a second end position of the window, formed as depressed regions of metal residing outside the central plane of the metal. The method includes punching a first blank in the first dimple and a second blank in the second dimple, and subsequently bending the edge regions around the first and second blank to form a bend of the metal away from the central plane. The central region of the window is formed between and joining the blanks, and a rivet opening is formed, adapted to receive a rivet for staking the tab to a container end.

Abstract: The present invention is a reformed container end and a method of forming the container end. The container end includes a center panel surrounded by a countersink having an inner wall, an outer wall, and a countersink bottom. The countersink bottom includes a first arcuate segment having a small radius and a second arcuate segment having a larger radius. The container end may also include a portion wherein the center panel is slightly expanded and the inner wall is further reformed to direct potential buckling away from the nose of a pour opening panel.

Abstract: A method of reforming a countersink (14) of a container end (10) from a shell (10') is disclosed. A shell (10') is provided having a center panel (12') including an initial panel height (A') and an initial panel diameter (D'). The shell further has an integral countersink (14') including an initial countersink depth (A'), an inner wall (30') and an outer wall (32') being joined by a curved countersink bottom (34'). The bottom has an initial bottom radius (R1). The panel (12') is joined to the inner wall (30') of the countersink by a curved shoulder (36') having an initial shoulder radius (R2'). The shell is reformed by decreasing the panel height, increasing the panel diameter and decreasing the countersink depth. The reformed shell (14") is further reform by increasing the panel height and further decreasing the countersink depth.

Abstract: A method of reforming a countersink (14) of a container end (10) from a shell (10') is disclosed. A shell (10') is provided having a center panel (12') including an initial panel height (A') and an initial panel diameter (D'). The shell further has an integral countersink (14') including an initial countersink depth (A'), an inner wall (30') and an outer wall (32') being joined by a curved countersink bottom (34'). The bottom has an initial bottom radius (R1). The panel (12') is joined to the inner wall (30') of the countersink by a curved shoulder (36') having an initial shoulder radius (R2'). The shell is reformed by decreasing the panel height, increasing the panel diameter and decreasing the countersink depth. The reformed shell (14") is further reform by increasing the panel height and further decreasing the countersink depth.