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    • 51. 发明申请
    • CAN SHELL AND DOUBLE-SEAMED CAN END
    • CAN外壳和双端接CAN端
    • WO03004716A2
    • 2003-01-16
    • PCT/US0222287
    • 2002-07-01
    • CONTAINER DEV LTD
    • STODD R PETER
    • B21D51/44B21D51/30B21D51/32B21D51/38B65D8/12B65D8/20C22F
    • B21D51/38B21D51/32B65D7/12B65D7/36B65D7/44
    • A drawn aluminum can shell has a peripheral crown which is double-seamed with an end portion of an aluminum can body to provide a can end having a generally flat center panel connected by a curved panel wall to an inner wall of an annular U-shaped countersink. The countersink has a generally cylindrical outer wall and an inner width less than the radius of the panel wall. The outer wall of the countersink connects with a lower wall portion of a frustoconical chuckwall at a junction below the center panel, and an upper wall portion of the chuckwall extends to an inner wall of the crown at an angle of at least 16 DEG with the center axis. In one embodiment, the chuckwall has an intermediate generally vertical short riser portion connecting the wall portions, and the inner bottom width of the countersink is less than .040 inch.
    • 拉制的铝罐壳具有外周冠部,其与铝罐体的端部双缝合,以提供具有大致平坦的中心面板的罐端部,该中心面板通过弯曲的板壁连接到环形U形的内壁 埋头孔。 埋头孔具有大致圆柱形的外壁和小于面板壁的半径的内部宽度。 埋头孔的外壁与中心板下方的接头处的截头圆锥形夹板的下壁部分连接,并且夹板壁的上壁部分以至少16°的角度延伸到冠部的内壁,并且 中心轴。 在一个实施例中,卡盘壁具有连接壁部分的中间大致垂直的短立管部分,并且埋头孔的内底宽度小于0.040英寸。