公开(公告)号：US5129541A

公开(公告)日：1992-07-14

申请号：US710165

申请日：1991-06-04

申请人： Lee R. W. Voigt ,  Jeffrey A. Dobrzynski

发明人： Lee R. W. Voigt ,  Jeffrey A. Dobrzynski

IPC分类号： B65D17/32 ,  B65D17/34 ,  B65D47/36

CPC分类号： B65D17/165 ,  B65D2517/0014 ,  B65D2517/0073 ,  B65D2517/0079

摘要： An easy open can end is disclosed having an attached tear strip across a portion of the can end outlined by a score line, and a round-shaped pull tab secured to the can end adjacent the attached tear strip, the pull tab including a nose portion having a clevis formed in an offset location relative to the pull tab's longitudinal centerline, the can end including a pivot ridge member formed in a centered position relative to the logitudinal centerline of the attached pull tab for assisting in maximizing the offset forces applied by the pull tab's nose portion. The offset clevis operates to create reduced opening forces when opening the can end, including a reduced initial "pop" pressure and a reduced "tear" pressure. These reduced forces result by having the offset clevis cause the initial "pop" opening to occur along only one side of the tear strip's score line and then the opening tear occurs sequentially along the remainder of the score line. This permits use of a score line of reduced depth, thereby leaving additional residual metal at the score line area, which increased residual metal results in less can leakage due to less incidents of unwanted score line fracture. The present invention's offset clevis tab pull is usable with can ends formed of steel and aluminum.

摘要翻译： 公开了一种容易开口的罐端，其具有穿过由刻痕线概述的罐端部的一部分的附接的撕裂条，以及紧固在附接的撕裂带上的罐端部的圆形拉片，拉片包括鼻部 具有相对于拉片的纵向中心线在偏移位置形成的U形夹，罐端包括相对于附接的拉片的纵向中心线形成在中心位置的枢轴脊部件，用于帮助最大化由拉力施加的偏移力 标签的鼻子部分。 当打开罐头端部时，偏移U形夹用于产生减小的打开力，包括降低的初始“弹出”压力和减小的“撕裂”压力。 这些减小的力通过使偏移U形夹使得初始的“弹出”开口仅沿着撕条的刻痕线的一侧发生，然后开始撕裂沿着刻痕线的其余部分顺序地发生。 这允许使用降低深度的刻痕线，从而在刻痕线区域留下额外的残余金属，这增加了残余金属，导致由于较少的不想要的刻痕线断裂事件导致的较少的漏电。 本发明的偏移夹爪拉头可用于由钢和铝形成的罐端。