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    • 46. 发明授权
    • Easy-open mechanism for can end
    • 易开机制可以结束
    • US5931331A
    • 1999-08-03
    • US805204
    • 1997-02-27
    • William A. KirkMichael C. CalhounDavid M. HoffmanJeffrey McFarland
    • William A. KirkMichael C. CalhounDavid M. HoffmanJeffrey McFarland
    • B65D41/32
    • B65D17/165B65D2517/0014B65D2517/0089Y10S220/906
    • A can end having an improved pour-type ecology opening mechanism includes a conventional can end wall that contains a score line that defines a displaceable panel. The score line includes an initial design rupture point, a radiused portion having a first tangent point and a second tangent point, and a main portion that terminates at a final transition point. The can end further includes a tab having a liftable heel portion and a tab nose portion, with the tab nose portion being positioned to apply downward pressure to the panel at a pressure point on the displaceable panel when the heel portion is lifted. The tab has a center line that is coincident with a radius of said can end wall. Advantageously, the pressure point is positioned a distance, taken in the direction of the center line, from the second tangent point of the radiused portion that is selected to prevent a buildup of force that would otherwise hasten propagation of separation along the main portion of the score. This prevents splashing of the beverage during opening of the can by the consumer.
    • 具有改进的倾倒式生态开放机构的罐端包括常规罐端壁,其包含限定可移置面板的刻痕线。 刻痕线包括初始设计破裂点,具有第一切点和第二切点的圆角部分以及终止于最终转变点处的主要部分。 罐端还包括具有可升降的跟部部分和突出部分部分的突片,其中突出部分部分被定位成当脚跟部分被抬起时在可移动面板上的压力点向面板施加向下的压力。 突片具有与所述罐端壁的半径重合的中心线。 有利地,压力点被定位在距离中心线方向上的距离圆弧部分的第二切点的距离,该距离被选择以防止积累力,否则会加速分离沿着主体部分的传播 得分了。 这防止消费者在罐打开期间喷射饮料。