[미국특허]
Easy access opening tab for a container end closure
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B65D-017/34
B65D-017/00
B65D-043/26
출원번호
US-0838478
(2013-03-15)
등록번호
US-9033174
(2015-05-19)
발명자
/ 주소
Chasteen, Howard C.
Jacober, Mark A.
출원인 / 주소
Ball Corporation
대리인 / 주소
Sheridan Ross P.C.
인용정보
피인용 횟수 :
8인용 특허 :
45
초록▼
An end closure for food and beverage containers is provided. The end closure comprises a central panel portion having a protuberance for facilitating access to and manipulation of a pull tab. Before the food or beverage container is pressurized, the protuberance is substantially flat to improve stac
An end closure for food and beverage containers is provided. The end closure comprises a central panel portion having a protuberance for facilitating access to and manipulation of a pull tab. Before the food or beverage container is pressurized, the protuberance is substantially flat to improve stacking and conveying of the end closure. After the food or beverage container is filled and pressurized, the protuberance selectively deflects and lifts a tail portion of the pull tab to facilitate access.
대표청구항▼
1. An end closure for a beverage container with an improved access pull tab, comprising: a peripheral curl adapted for interconnection to a neck of the container;a chuck wall interconnected to said peripheral curl and extending downwardly therefrom;a countersink having an outer panel wall interconne
1. An end closure for a beverage container with an improved access pull tab, comprising: a peripheral curl adapted for interconnection to a neck of the container;a chuck wall interconnected to said peripheral curl and extending downwardly therefrom;a countersink having an outer panel wall interconnected to a lowermost portion of said chuck wall and an inner panel wall;a central panel interconnected to said inner panel wall and oriented in a substantially horizontal plane and having a substantially vertical center axis;a pull tab interconnected to an exterior surface of said central panel at an interconnection point, said pull tab including a lift ring and a nose on an end opposite the lift ring, said nose positioned proximate to a frangible score line in said central panel which defines a pour opening; anda deflectable protuberance in said central panel which is positioned below said pull tab between said interconnection point and a distal end of said lift ring, said deflectable protuberance having an apex with a height substantially the same as said central panel in a first position prior to deflection and said deflectable protuberance having said apex raised relative to said central panel in a second position after deflection which elevates said lift ring of said pull tab to provide improved access for a user's fingers below said lift ring. 2. The end closure of claim 1, wherein said deflectable protuberance is elevated at least about 0.020 inches in said second position when compared to said first position. 3. The end closure of claim 1, wherein said deflectable protuberance is defined by a substantially circular shaped perimeter. 4. The end closure of claim 1, wherein said deflectable protuberance moves between said first position and said second position when a pressure below said deflectable protuberance is at least about 15 psi. 5. The end closure of claim 1, wherein said pull tab is positioned at an angle of between about zero and four degrees from a horizontal plane when said deflectable protuberance is in said second position. 6. The end closure of claim 1, wherein said pull tab is interconnected to said central panel with a rivet. 7. The end closure of claim 1, wherein said chuck wall is inclined between said peripheral curl and said outer panel wall of said countersink at an angle between about 10 and 50 degrees. 8. The end closure of claim 1, wherein said deflectable protuberance contacts said pull tab at a contact area. 9. The end closure of claim 1, further comprising slack metal surrounding said deflectable protuberance when said deflectable protuberance is in said first position. 10. A metallic beverage container with a dynamic stay on tab, comprising: a container body having a closed lower end and an open upper end with a neck;a metallic end closure adapted for interconnection to the neck of the container, said metallic end closure having a substantially vertical center axis when viewed in cross-section, and oriented in a substantially horizontal plane when in a first position;a pull tab interconnected at an interconnection point to a central panel of said metallic end closure and comprising a lift ring on one end and a nose on an opposite end, said nose positioned proximate to a frangible score line in said central panel, said frangible score line defining at least a portion of a pour opening; anda deflectable protuberance formed in said central panel and positioned below said pull tab between a distal end of said lift ring and said pull tab interconnection point, said deflectable protuberance extending upwardly to elevate said lift ring of said pull tab after at least one of a food and a beverage is placed in said container and said metallic end closure is interconnected to said neck of said container, wherein an entire area of said deflectable protuberance is positioned within an outer perimeter of said pull tab. 11. The metallic beverage container of claim 10, wherein said deflectable protuberance extends upwardly at least about 0.020 inches. 12. The end closure of claim 10, wherein said pull tab is interconnected to an outer surface of said central panel with a rivet. 13. The metallic beverage container of claim 10, wherein said deflectable protuberance is positioned approximately midway between a rivet and the lift ring of said pull tab. 14. The metallic beverage container of claim 10, wherein said deflectable protuberance is positioned approximately 0.320 inches from a center point of a rivet. 15. The metallic beverage container of claim 10, wherein said deflectable protuberance extends upwardly when a pressure in said container is at least about 15 psi. 16. A method of forming and filling an improved access pull tab and container, comprising: providing a container comprising a body having a closed lower end and an open upper end with a neck;providing an end closure comprising a pull tab interconnected to a central panel, a deflectable protuberance formed in said central panel and positioned below said pull tab, a protuberance slack area positioned around at least a portion of said deflectable protuberance and positioned below said central panel and below an apex of said deflectable protuberance, and a frangible score line defining a perimeter of an opening, said pull tab comprising a lift portion on one end and a nose on an opposite end, said nose oriented proximate to a frangible score line in said central panel, wherein a top surface of said pull tab is parallel to a chime of said end closure;filling said container with a carbonated beverage;attaching said end closure to said neck of said container;increasing a pressure in said container to create a force below said deflectable protuberance; andexpanding said deflectable protuberance upward to raise said lift portion of said pull tab such that said top surface of said pull tab is positioned at an acute angle relative to said chime of said end closure. 17. The method of claim 16, wherein said end closure further comprises an interconnection point where said pull tab is interconnected to said central panel, and said deflectable protuberance is positioned between said interconnection point and lift portion. 18. The method of claim 16, further comprising expanding said deflectable protuberance upwardly at least about 0.020 inches. 19. The method of claim 16, further comprising providing slack metal around said deflectable protuberance, said slack metal expanding upwardly when said deflectable protuberance expands upwardly. 20. The method of claim 16, further comprising positioning said pull tab at an angle of between about one degree and four degrees from a horizontal plane after raising said lift portion of said pull tab.
DeMars Robert A. (23221 Ladrillo Ave. Woodland Hills CA 91367) Mackay Spencer L. (28765 Pisces St. Agoura Hills CA 91301), Beverage container opening top.
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