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公开(公告)号：US3944453A
公开(公告)日：1976-03-16
申请号：US485895
申请日：1974-07-05
IPC分类号： B29C53/58 , B29C53/80 , B29C53/82 , B29C53/84 , B29C65/00 , B29C67/00 , B29D23/00 , F16L11/08 , C21D1/18
CPC分类号： B29C53/821 , B29C53/587 , B29C53/8016 , B29C53/845 , F16L11/085 , B29L2023/005 , Y10T156/109
摘要： An improved hose construction and method of forming the same wherein a reinforcement layer is bonded to a thermoplastic core by a solventless bonding layer defining an inner thermal weld portion substantially autogenous with the outer surface portion of the core tube and an outer portion mechanically interlocked with the confronting inner portion of the reinforcement layer.The bonding layer is thermally formed to be autogenous with the outer surface portion of the core tube and may include an added layer of thermoplastic material which is concurrently fused to define the fused bonding layer. The added layer is compatible with the core tube outer surface portion and is preferably formed of similar thermoplastic material. The reinforcement layer is wrapped about the core tube under tension to provide an embedment thereof in the bonding layer to effect a positive mechanical interlocking therebetween.
摘要翻译： 一种改进的软管结构及其形成方法，其中加强层通过无定影粘合层结合到热塑性芯上，所述无溶剂粘合层限定了与芯管的外表面部分基本上自生的内部热焊接部分， 面对加强层的内部部分。
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公开(公告)号：US4047412A
公开(公告)日：1977-09-13
申请号：US741968
申请日：1976-11-15
申请人： Marvin E. Holmgren
发明人： Marvin E. Holmgren
CPC分类号： B21C37/294 , Y10T29/49428
摘要： A method of making a pipe fitting havin three or more legs arranged in any desired shape by deforming a malleable metal tube substantially filled with a constant volume filler material in a single step without the need for secondary bending while maintaining the filler material at constant volume to provide a fitting wherein the variation in wall thickness is less than about 10%.
摘要翻译： 通过使基本上填充有恒定体积的填充材料的可延展的金属管在单个步骤中变形而制造管件的三个或更多个腿部的方法，而不需要二次弯曲，同时将填充材料保持恒定的体积， 提供其中壁厚的变化小于约10％的配件。
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