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2. 发明授权

US06170535B2 Multi-layer conduit 有权
标题翻译：多层导管
公开(公告)号：US06170535B2
公开(公告)日：2001-01-09
申请号：US09432565
申请日：1999-11-12
申请人： Changize Sadr , Sam Shafiee
发明人： Changize Sadr , Sam Shafiee
IPC分类号： F16L1112
CPC分类号： F16L11/127 , B29C49/0015 , B29C49/22 , B60K15/04 , F16L2011/047
摘要： A conduit for use as a filler pipe for transferring hydrocarbon containing fuels such as gasoline from an inlet point to a storage tank which is to be blow molded comprises a plurality of layers. The innermost layer is made from electrically conductive high density polyethylene and serves to bleed off static electricity generated during the fuel filling process. At least one of the other layers of the conduit comprises barrier material which inhibits the passage of hydrocarbon vapours through the walls of said conduit as hydrocarbon containing fuels flow along the conduit. Advantageously, the conduit may include a mounting tab intermediate the ends, the tab having a web portion which is electrically connected to the inner conductive layer to assist in locating the fuel filler conduit and providing additional conduct of static electrically to the vehicle body or frame. A process for manufacturing such multi-layer conduit comprises simultaneously extruding a multiplicity of layers through a multiple head extruder. Advantageously, a tab as desired may be formed by pinching the extruded parison after initially blowing the parison and before finally blowing the parison.
摘要翻译：用作用于将含烃燃料如汽油从入口点转移到要吹塑的储罐的填料管的导管包括多个层。最内层由导电高密度聚乙烯制成，用于排出燃料填充过程中产生的静电。导管的其他层中的至少一个包括阻挡材料，其阻止烃蒸气通过所述导管的壁，因为含烃燃料沿导管流动。有利地，导管可以包括在端部之间的安装突片，突片具有腹板部分，腹板部分电连接到内部导电层，以帮助定位燃料加注管道并且向车体或框架提供静电静电导电。用于制造这种多层管道的方法包括同时通过多头挤出机挤出多层。有利地，可以通过在最初吹制型坯之后并在最后吹入型坯之前夹紧挤出的型坯来形成所需的接头。

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