Pressure resistant end shell for a container and method and apparatus for forming the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B65D-051/14
B21D-051/44
출원번호
US-0348828
(1989-05-08)
발명자
/ 주소
Biondich Scott C. (Delmont PA)
출원인 / 주소
Aluminum Company of America (Pittsburgh PA 02)
인용정보
피인용 횟수 :
50인용 특허 :
16
초록▼
An end shell for a container, as well as a method and an apparatus for making the same, is provided, comprising a central wall and an annular groove around and below the general plane of the central wall. The annular groove is defined inwardly by a panel wall integrally connected to the central wall
An end shell for a container, as well as a method and an apparatus for making the same, is provided, comprising a central wall and an annular groove around and below the general plane of the central wall. The annular groove is defined inwardly by a panel wall integrally connected to the central wall and outwardly by a chuckwall which extends upwardly beyond the general plane of the central wall and outwardly therefrom to form an outwardly projecting peripheral flange. The panel wall is disposed at an angle of less than ninety degrees from the general plane of the central wall.
대표청구항▼
An end shell for a container having improved internal pressure resistance comprising: a central panel portion, an open annular groove around and below the general plane of the central panel portion, said open annular groove bounded outwardly by a chuckwall portion extending upwardly and outwardly fr
An end shell for a container having improved internal pressure resistance comprising: a central panel portion, an open annular groove around and below the general plane of the central panel portion, said open annular groove bounded outwardly by a chuckwall portion extending upwardly and outwardly from the annular groove beyond the general plane of the central panel portion, said annular groove bounded inwardly with respect to the central panel, by a panel wall portion integrally connected to the central panel portion, said panel wall disposed at an angle of less than 90°and greater than or equal to 70°from the general plane of the central panel portion, and at an angle greater than or equal to the angle formed by the chuckwall relative to the general plane of the central panel portion, and an outwardly projecting flange, extending radially outwardly of the upwardly extending chuckwall portion. A method of forming a pressure resistant end shell for a container comprising the steps of: providing an end shell having an interior surface and an exterior surface with respect to the intended disposition of the end shell onto the container, a central panel portion in the end shell, a frustoconical chuckwall portion projecting outwardly and upwardly beyond a general plane of the central panel portion at an angle of from 70°to 90°with respect to the central panel portion, and an outwardly projecting flange extending radially outwardly of the chuckwall portion, and while substantially retaining the angular disposition of the chuckwall with respect to the central panel portion, moving a part of the central panel portion to form an annular groove about the central panel portion bounded outward, with respect to the central panel, by the chuckwall portion extending from the annular groove upwardly beyond the general plane of the central panel portion, and bounded inwardly, with respect to the central panel, by a panel wall portion disposed at an angle of less than 90°and greater than or equal to 70°from the general plane of the central panel portion, and said panel wall portion being disposed at an angle greater than or equal to the angle of the chuckwall portion with respect to the central panel portion. An apparatus for forming a pressure resistant end shell for a container comprising: a first die set including a generally planar top surface, an annular ring surrounding said top surface and recessed below said top surface at a depth less than the distance between an inside surface of a central wall and an outside surface of an annular groove of the end shell, and an upstanding portion extending outwardly and upwardly from the annular ring, said upstanding portion having a configuration mating substantially with a configuration of the annular groove, chuckwall and at least a portion of a peripheral flange of the end shell, a second die set, generally opposing the first die set, including a central punch having a circular outside surface with a diameter greater than the diameter of the top surface of the first die set, and a clamping ring having an outside clamping surface having a configuration mating substantially with a configuration of at least a portion of the exterior surface of the peripheral flange and at least an upper portion of the exterior surface of the chuckwall, means for inserting an end shell between the first die set and the second die set, means for moving the clamping ring of the second die set toward the upstanding portion of the first die set to clamp at least a portion of the peripheral flange and at least an upper portion of the chuckwall of the end shell therebetween, means for moving the central punch against the exterior surface of the central wall of the end shell, after the peripheral flange and chuckwall portions have been clamped, to move a panel wall of the end shell outwardly into a recess in the apparatus to dispose the panel wall at an angle of less than 90°from the general plane of the central wall, means for opening the dies, and means for removing the end shell.
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이 특허에 인용된 특허 (16)
DeLine John W. (Denver CO) Ida Nobel N. (Boulder CO), Container lid and method of manufacture.
Bachmann Henry C. (Dayton OH) Brown Omar L. (Dayton OH) Fraze Ermal C. (Dayton OH) Wynn David K. (Dayton OH) Gregg James R. (Springboro OH), Method and apparatus for making shells for can ends.
Taube William L. (Murrietta CA) Roberts David A. (Wokingham GB2), Method of forming a one-piece can body having an end reinforcing radius and/or stacking bead.
Bachmann Henry C. (Dayton OH) Brown Omar L. (Dayton OH) Fraze Ermal C. (Dayton OH) Wynn David K. (Dayton OH) Gregg James R. (Springboro OH), Shell for can.
Santamaria, Alejandro J.; Mathabel, Richard R.; Boysel, Darl G., Can end, tooling for manufacture of the can end and seaming chuck adapted to affix a converted can end to a can body.
Zonker, Harry R.; Myers, Gary L.; Dick, Robert E.; Boysel, Darl G.; Ward, John S., Metal end shell and easy opening can end for beer and beverage cans.
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