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A pipe coupling assembly for double-wall pipe having an interstice between an inner pipe and an outer pipe, which joins the terminal ends of adjacent sections of the double-wall pipe to a fitting element, as a tee or elbow fitting, as well as to a connector tube bypass assembly. The coupling assembl

A pipe coupling assembly for double-wall pipe having an interstice between an inner pipe and an outer pipe, which joins the terminal ends of adjacent sections of the double-wall pipe to a fitting element, as a tee or elbow fitting, as well as to a connector tube bypass assembly. The coupling assembly provides fluid communication between the interstices of the adjacent sections of the double-wall pipe and the connector tube bypass assembly but does not permit fluid from the interstices of the pipes to pass through the pipe fitting.

대표청구항 ▼

A pipe coupling assembly for double-wall pipe having an interstice between an inner pipe and an outer pipe, which joins the terminal ends of adjacent sections of the double-wall pipe to a fitting element, as a tee or elbow fitting, as well as to a connector tube bypass assembly. The coupling assembl

A pipe coupling assembly for double-wall pipe having an interstice between an inner pipe and an outer pipe, which joins the terminal ends of adjacent sections of the double-wall pipe to a fitting element, as a tee or elbow fitting, as well as to a connector tube bypass assembly. The coupling assembly provides fluid communication between the interstices of the adjacent sections of the double-wall pipe and the connector tube bypass assembly but does not permit fluid from the interstices of the pipes to pass through the pipe fitting. US-4954252, 19900900, Griffin et al., 210/136; US-4967744, 19901100, Chua; US-5088486, 19920200, Jinotti; US-5121746, 19920600, Sikora; US-5140983, 19920800, Jinotti; US-5195527, 19930300, Hicks; US-5213096, 19930500, Kihlberg et al., 128/205.12; US-5230727, 19930700, Pound et al.; US-5284160, 19940200, Dryden, 128/203.12; US-5320093, 19940600, Raemer; US-5377670, 19950100, Smith; US-5404873, 19950400, Leagre et al.; US-5546930, 19960800, Wikefeldt; US-5623922, 19970400, Smith; US-5715815, 19980200, Lorenzen et al.; US-5722391, 19980300, Rosenkoetter et al.; US-5778872, 19980700, Fukunaga et al.; US-5823184, 19981000, Gross; US-5983891, 19991100, Fukunaga; US-5983894, 19991100, Fukunaga et al., 128/205.29; US-5983896, 19991100, Fukunaga et al.; US-6003511, 19991200, Fukunaga et al.; US-6235192, 20010500, Melfi et al., 210/136