公开(公告)号：US06978807B1

公开(公告)日：2005-12-27

申请号：US11090649

申请日：2005-03-25

Applicant: Thomas Joseph Keyes

Inventor： Thomas Joseph Keyes

IPC: F16L55/00 ,  F16L59/14

CPC classification number: F16L59/15 ,  F16L55/00 ,  F16L59/143

Abstract: A high temperature pre-insulated piping system is shown which has a special water stop located along the length of the piping. The water stop has an internal disk which forms a pair of isolated regions within the water stop. The internal disk is formed of a material which is impervious to the flow of water. As a result, the two internal regions are isolated from one another and act as isolating elements to contain any breach in the exterior of the piping system to a specific location in the length of the pipe string.

Abstract translation: 示出了一种高温预绝缘管道系统，其具有沿管道长度设置的特殊止水阀。 止水器具有内部盘片，该内部盘片在停水站内形成一对隔离区域。 内部盘由不透水流的材料形成。 结果，两个内部区域彼此隔离并且用作隔离元件以将管道系统的外部中的任何泄漏包含在管柱长度中的特定位置。

公开(公告)号：US06547908B2

公开(公告)日：2003-04-15

申请号：US09918627

申请日：2001-07-30

Applicant: Thomas Joseph Keyes ,  James Bass

Inventor： Thomas Joseph Keyes ,  James Bass

IPC: B65H8100

CPC classification number: B29C43/027 ,  B29C47/0023 ,  B29C47/02 ,  B29C47/021 ,  B29C53/64 ,  B29C53/822 ,  B29K2023/06 ,  B29K2023/065 ,  B29K2023/12 ,  B29L2023/225 ,  F16L59/143

Abstract: A method is shown for manufacturing a polyethylene jacket of the type used in pre-insulated piping systems. A mandrel is first coated with a brittle polymeric coating. A melt profile of polyethylene is then extruded onto the mandrel and spirally wound to produce adjacent windings. The adjacent windings make contact to form a finished jacket which is in engagement with the brittle coating. After the jacket has set, an external compressive force is applied to the tubular member thus formed sufficient to crush the internal brittle coating, thereby freeing the polyethylene jacket from engagement with the mandrel. The jacket can then be removed from the mandrel.

Abstract translation: 示出了用于制造用于预绝缘管道系统中的类型的聚乙烯护套的方法。 首先用脆性聚合物涂层涂覆心轴。 然后将聚乙烯的熔体轮廓挤出到心轴上并螺旋缠绕以产生相邻绕组。 相邻的绕组接触以形成与脆性涂层接合的成品护套。 在护套固定之后，外部压缩力施加到如此形成的管状构件上，足以压碎内部脆性涂层，从而释放聚乙烯护套与心轴接合。 然后可以从心轴上取下外套。