IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0565289
(1995-11-30)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
123 인용 특허 :
39 |
초록
▼
An easy-open, stay-on-tab can end has a circular end wall with a large, substantially oval tear panel defined by a score line and a hinge. A rivet adjacent the tear panel connects a tab to the end wall. The width of the tear panel, as measured perpendicular to the diameter of the end wall, is substa
An easy-open, stay-on-tab can end has a circular end wall with a large, substantially oval tear panel defined by a score line and a hinge. A rivet adjacent the tear panel connects a tab to the end wall. The width of the tear panel, as measured perpendicular to the diameter of the end wall, is substantially greater than its length. The opening formed by lifting the rear of the tab and displacing the tear panel downwardly about its hinge provides improved pourability and drinkability of the liquid contents of the can. The area of the tear panel is at least 0.50 in.sup.2. The tear panel extends substantially to the center of the end wall and may include an upwardly projecting, closed, predominantly oval bead having a portion generally following the outline of the bight of the score line. The front end of the tab extends over the bead and cooperates with it during opening.
대표청구항
▼
[ What is claimed is:] [1.] A metal easy-open can end with non-detachable means for making an opening therethrough suitable for pouring and drinking, the can end havinga circular end wall,a rupturable score line in the end wall defining most of the periphery of a non-removable tear panel, while leav
[ What is claimed is:] [1.] A metal easy-open can end with non-detachable means for making an opening therethrough suitable for pouring and drinking, the can end havinga circular end wall,a rupturable score line in the end wall defining most of the periphery of a non-removable tear panel, while leaving between the tear panel and the remainder of the end wall an integral hinge whose length is substantially less than the maximum dimension of the tear panel, the score line extending away from one end of the hinge, around a bight where it is distant from the hinge, and back to the other end of the hinge, and the tear panel having its length lying on a diameter of the circular end wall,a tab extending generally parallel and close to an underlying area of the end wall, a rear part of the tab being engageable for upward lifting, and a forward part of the tab terminating in a nose at its front end, anda rivet located on said diameter and adjacent the score line, which rivet non-detachably connects the end wall to the tab and permits pivotal movement of the tab about an axis of rotation close to the rivet and generally parallel to the end wall when the rear part of the tab is lifted up from the end wall,whereby, when the rear part of the tab is lifted, the forward part of the tab is adapted to press down on the tear panel, so as to cause relative vertical movement between the tear panel and the rivet, initial rupture of the score line close to the rivet, propagation of the rupture away from the hinge, around the bight, and back to the hinge, and swinging of the tear panel down about the hinge to an open position,wherein the improvement comprises the tear panel, and hence the opening for pouring and drinking, which(a) has substantially the shape of an oval,(b) has its width, as measured perpendicular to said diameter, substantially greater than its length,(c) has an area greater than 0.5 in.sup.2, and(d) extends substantially to the center of the circular end wall.
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