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1. 发明授权

US06631928B1 Expansion joint device 失效
标题翻译：膨胀节装置
公开(公告)号：US06631928B1
公开(公告)日：2003-10-14
申请号：US09720646
申请日：2001-03-08
申请人： Yuzo Sakata
发明人： Yuzo Sakata
IPC分类号： F16L5102
CPC分类号： F16L51/027 , F16L27/1085 , F16L27/111
摘要： Both ends of a bellows-type outer cylinder [31] capable of axial expansion and contraction are connected in a leakproof manner to a pair of connection passage ends [20], thereby constituting an expansion passage [30]. A cylindrical resin film [33] having no permeability to fluid is arranged in an interior of the bellows-type outer cylinder [31], and the axial ends thereof are connected in a leakproof manner to said connecting passage end regions. The cylindrical region [34] positioned in the intermediate region of the cylindrical resin film [33] covers the inner surface of said bellows-type outer cylinder [31] in a leakproof manner. According to such structure, the fluid traveling through said bellows-type outer cylinder [31] and the impurities contained in the fluid are prevented from residing in the grooves formed to the inner circumferential surface of the bellows-type outer cylinder [31], and the cleanness and quality maintaining property of the expansion joint device is secured. In another example, further added to or instead of said bellows-type outer cylinder [31], an inner sleeve and an outer sleeve may be slidably superposed to form an expansion outer cylinder.
摘要翻译：能够进行轴向膨胀和收缩的波纹管式外筒[ 31 ]的两端以防漏的方式连接到一对连接通道端[ 20 ]，从而构成扩展段[ 30 ]。在波纹管型外筒的内部设置不具有流体渗透性的圆柱形树脂膜[ 33 ] < PDAT>]，并且其轴向端部以防漏方式连接到所述连接通道端部区域。位于圆柱形树脂膜[ 33 ]的中间区域的圆柱形区域[ 34 ]覆盖了所述波纹管式外筒[ 31 ]以防漏的方式。根据这种结构，通过所述波纹管式外筒[ 31 ]和包含在流体中的杂质的流体被阻止在形成于内周的槽中波纹管式外筒的表面[ 31 ]，确保了膨胀接头装置的清洁度和质量维持性。在另一个例子中，进一步添加或代替所述波纹管式外筒[ 31 ]，内套筒和外套筒可以可滑动地重叠以形成膨胀外筒。

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