초록 ▼

A device for providing access to the interstitial region between an inner pipe and an outer pipe which coaxially define the region. The inner pipe has at least one terminal end extending from the outer pipe to leave a portion of the outer wall of the inner pipe exposed to thereby expose the intersti

A device for providing access to the interstitial region between an inner pipe and an outer pipe which coaxially define the region. The inner pipe has at least one terminal end extending from the outer pipe to leave a portion of the outer wall of the inner pipe exposed to thereby expose the interstitial region. A boot is provided for defining a chamber with a larger end snugly fitting the outer pipe and a small end snugly fitting on the exposed outer wall of the inner pipe. The boot has an access port communicating with the interior of the chamber to provide access to the interstitial region.

대표청구항 ▼

[ What is claimed is:] [1.] In a piping system comprising sections of multi-walled pipe having an interstitial space between a primary and a containment pipe, a connecting apparatus for joining the interstitial space in a first section of multi-walled pipe to the interstitial space of a second secti

[ What is claimed is:] [1.] In a piping system comprising sections of multi-walled pipe having an interstitial space between a primary and a containment pipe, a connecting apparatus for joining the interstitial space in a first section of multi-walled pipe to the interstitial space of a second section, said connecting apparatus comprising:first and second boots affixed to respective terminal ends of the first and second multi-walled pipe sections, and a tube connected between said first boot and said second boot;the terminal ends of the respective multi-walled pipe sections exposing the interstitial space between the primary and containment pipes at a point where the primary pipe extends out from within the containment pipe, said point being the terminal end of said containment pipe of a respective pipe section;said first and second boots each having first and second lengthwise ends and means for securing both of said ends to the terminal ends of the respective first and second pipe sections, the boots being secured to the terminal ends of the respective pipe sections to confine the exposed interstitial space at the terminal end of each pipe section within an annular chamber between the first and second lengthwise ends of the respective first and second boots;the first and second boots each having an access port communicating with the interstitial space in the respective first and second pipe sections through the annular chamber within each of the respective boots,the interstitial space in the first pipe section being linked to the interstitial space in the second pipe section by the connection of the tube between the access ports of the respective first and second boots.