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    • 3. 发明授权
    • Bendable polymer-lined water heater connector
    • 弯曲聚合物衬里热水器连接器
    • US06848719B2
    • 2005-02-01
    • US09682467
    • 2001-09-06
    • William W. Rowley
    • William W. Rowley
    • B29C35/04B29C57/04F16L9/147F16L35/00
    • F16L9/147B29C57/04B29C2035/046
    • This invention relates to a connector having an inner polymeric liner with either two opposed flared ends or one flared end and an opposed sealing end, a bendable outer metallic sleeve having two opposed flared ends of essentially similar geometry to either the polymeric liner flared ends or one flared end and an opposed sealing end shelf, and two outwardly facing threaded nuts, each of said nuts having a shelf which engages the opposed flared ends of said metallic sleeve. The connector will often have a ribbed segment between the ends and washers for sealing engagement with the interior wall end portion of the liner at the flared end.
    • 本发明涉及一种具有内聚合物衬里的连接器,其具有两个相对的扩口端或一个扩口端和相对的密封端,可弯曲的外金属套管具有两个相对的扩口端,其基本相似的几何形状与聚合物衬里的端部或一个 扩口端和相对的密封端架,以及两个面向外螺纹的螺母,每个所述螺母具有与所述金属套筒的相对的扩口端接合的搁板。 连接器通常在端部和垫圈之间具有肋状部分,用于与喇叭形端部的衬套的内壁端部部分密封接合。
    • 6. 发明授权
    • Extreme angle junction overmolding
    • 极角接头包覆成型
    • US6082780A
    • 2000-07-04
    • US018781
    • 1998-02-04
    • William W. RowleyRichard T. Seman
    • William W. RowleyRichard T. Seman
    • B29C45/14B29C70/76F16L47/32F16L41/00
    • B29C45/14336B29C70/766F16L47/32
    • The process of this invention will involve overmolding a thermoplastic or rubbery polymer composition over a thermoplastic hollow tube and a core insert to form a hollow overmolded coupler after the removal of the core insert, the tube entering the coupler at an angle which is less than 90.degree. so as to minimize any freezing of transported water which may reside in the coupler. The combination of the above polymers must satisfy at least two simultaneous conditions. First, the inserted plastic tube must not soften and begin melt flow to the point where it looses structural integrity during the molding processing and second, the overmolded polymer must be capable of forming an essentially leak-proof interface between the coupler and the plastic tube, preferably through either a chemical and/or physical bond between the plastic tube and the overmolded plastic. In one aspect of the invention, the composition of the overmolded polymer will be such that it will be capable of at least some melt fusion with the composition of the plastic tube, thereby maximizing the leak-proof characteristics of the interface between the plastic tube and overmolded plastic, e.g., by having at least a component of the polymer composition of the plastic tube and that of the overmolded polymer being the same or at least sufficiently similar or compatible so as to permit the melt fusion or blending or alloying to occur at least in the interfacial region between the exterior of the plastic tube and the interior region of the overmolded polymer.
    • 本发明的方法将包括将热塑性或橡胶状聚合物组合物包覆在热塑性中空管和芯插入件上,以在移除芯插入件之后形成中空包覆模制耦合器,该管以小于90°的角度进入耦合器 DEG,以最小化可能驻留在耦合器中的运输水的任何冻结。 上述聚合物的组合必须满足至少两个同时的条件。 首先,插入的塑料管不能软化并开始熔融流动到其在模制过程中失去结构完整性的点,其次,包覆成型的聚合物必须能够在耦合器和塑料管之间形成基本上防漏的界面, 优选地通过塑料管和包覆成型塑料之间的化学和/或物理结合。 在本发明的一个方面,包覆成型的聚合物的组成将使得其能够与塑料管的组合物至少熔融熔融,从而最大化塑料管与塑料管之间的界面的防漏特性 包覆成型的塑料,例如通过至少具有塑料管的聚合物组合物的组分和包覆成型的聚合物的组分相同或至少足够相似或相容,以便使熔体熔融或共混或合金化至少发生 在塑料管的外部和包覆成型的聚合物的内部区域之间的界面区域中。
    • 8. 发明授权
    • Method of forming a flange or bellows in a plastic tub
    • 在塑料桶中形成法兰或波纹管的方法
    • US4803033A
    • 1989-02-07
    • US38723
    • 1987-04-15
    • William W. Rowley
    • William W. Rowley
    • B29C53/30B29C67/00B29C53/08
    • B29C67/0014B29C53/30Y10S425/812
    • The invention concerns a method of forming a flange or bellows in a plastic tube. The tube is preheated at a precise area and gripping dies are used to compress the heated area. Upon compression, the heated area is forced to bulge out and fold to form the flange or bellows. A mandrel inserted into the tube prior to compression ensures that the tube bulges outwardly. The invention may be used to form a variety of flanges, rims or bellows on plastic tubing. It is particularly useful in forming retaining rims on polyethylene tubing used for gas tank vents. Exposure to gasoline may cause such tubes to swell or bend. With a retaining rim formed in accordance with the present invention such swelling or bending can readily be accommodated.
    • 本发明涉及一种在塑料管中形成凸缘或波纹管的方法。 管在精确的区域预热,夹紧模具用于压缩加热区域。 在压缩时,加热区域被迫凸出并折叠以形成凸缘或波纹管。 在压缩之前插入管中的心轴确保管向外凸出。 本发明可用于在塑料管上形成各种凸缘,轮辋或波纹管。 在用于气罐通风口的聚乙烯管上形成保持边缘特别有用。 暴露于汽油可能导致这种管膨胀或弯曲。 根据本发明形成的保持边缘,可以容易地容纳这种膨胀或弯曲。