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    • 34. 发明授权
    • Plug and attaching hole thereof
    • 插头和连接孔
    • US4133560A
    • 1979-01-09
    • US804926
    • 1977-06-09
    • Masakazu IshikawaTsutomu Chuwman
    • Masakazu IshikawaTsutomu Chuwman
    • F16B21/04F16L41/08B65D51/16F16L5/02
    • F16L41/084Y10T403/7007
    • A plug and its attaching hole for use in removably securing an accessory to a pressure container. This plug includes a head portion and a reduced diameter or shank portion continuous with the undersurface of the former. Build-up portions are formed on the outer peripheral surface of the shank portion, while cut-away portions are provided in the peripheral edge of the plug-attaching hole defined in the wall of the pressure container. Upon insertion of the shank portion of the plug into the plug-attaching hole, the build-up portions formed on the outer peripheral surface of the shank portion of the plug are mated with the cut-away portions, and then the plug is turned through a given angle so that the build-up portions may engage the inner peripheral edge surface of the plug-attaching hole provided in the wall of the pressure container. This prevents the plug from being blown away from the pressure container, even if a weld formed around the head portion of the plug on an outer surface of the wall of the container is failed or broken due to deterioration.
    • 插头及其安装孔,用于可拆卸地将附件固定到压力容器。 该塞子包括头部和与前者的下表面连续的减小的直径或柄部分。 在柄部的外周面上形成有积层部,同时在压力容器的壁上形成的插塞安装孔的周缘部设有切断部。 在将插头的柄部插入插头安装孔中时,形成在插头的柄部的外周面上的叠合部与切除部配合,然后使插头转过 给定的角度,使得积聚部分可以接合设置在压力容器的壁中的插头附接孔的内周边缘表面。 这样即使在容器的壁的外表面上的塞子的头部周围形成的焊缝由于劣化而发生故障或断裂,也可防止插头从压力容器吹走。