1,038,130. Opening containers. CONTINENTAL CAN CO. Inc. Aug. 7, 1964 [Feb. 18, 1964], No. 32324/64. Heading B8D. The end wall of a can which may be opened by means of a tear tab 20 riveted to a removable portion 17, is formed with an inward rib 21, which acts to absorb the excess metal produced on scoring a line 18, surrounding the portion 17, whereby the rib prevents the can end from bulging. In a modification the rib 21 has two upright walls, Fig. 5 (not shown); and it may project outwards from the surface of the can end, Fig. 6 (not shown). The rib may be divided into short portions on circumferentially opposite sides of the portion 17. There may be two concentric reinforcing ribs projecting either outwards, Figs. 7-8 (not shown), or inwards, Fig. 9 (not shown), of the can. Instead of being of C-shape in plan view, the rib may be fully circular, Figs. 10-15 (not shown), either single or double.
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机译：1,038,130。打开容器。 CONTINENTAL CAN CO。Inc. 1964年8月7日[Feb. 1964年第18期]，第32324/64号。标题B8D。可以通过铆接至可移除部分17的撕拉片20打开的罐的端壁形成有向内肋21，该向内肋21用于吸收在刻痕线18上产生的多余金属，围绕该部分17 ，因此肋可以防止罐头鼓胀。在一个变型中，肋21具有两个直立壁，图5（未示出）。并且它可能从罐头的表面向外突出（图6）（未显示）。肋可以在部分17的周向相对侧上分成短部分。可以有两个同心的加强肋，它们向外突出，如图1和2所示。罐的图7-8（未示出）或图9的向内（未示出）。代替在平面图中为C形，肋可以是完全圆形的。 10-15（未显示），单张或双张。
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