发明授权
US06843097B2 Expansion wedge for use with heat exchanger tube, and structure for mounting tubes to header member of the heat exchange 失效
用于热交换器管的膨胀楔,以及用于将管安装到热交换头部的结构

Expansion wedge for use with heat exchanger tube, and structure for mounting tubes to header member of the heat exchange
摘要:
An expansion section for expanding the distance between longitudinal side surfaces of an opening of a tube when being inserted a predetermined depth into the opening is formed an expansion wedge body, and guide protuberances are protrusively formed on the respective longitudinal sides of the expansion section. The guide protuberances are inserted into the spaces provided on the respective sides of the opening of the tube, thereby guiding the expansion section into the opening.
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