Patent ID: 7238256
Filing Date: 2007-07-03
Classification: B29C,F16L

Abstract:
1. A pipe construction system comprising: a plurality of pipe sections, wherein each said pipe section is assembled from a plurality of pipe segments and has a socket formed at one end of the pipe section and a spigot formed at another end of the pipe section, such that the socket of one pipe section receives the spigot of another pipe section to provide a length of pipe; wherein each said pipe segment has a socket-forming end, a spigot-forming end, and two edges parallel to the length of the pipe section; wherein each edge includes a region of increased radial thickness radially extending beyond the radial thickness of a major part of the pipe segment and wherein each edge has a groove opened only at said edge and disposed within the radial thickness of the entire pipe segment at said region of increased radial thickness, said region of increased radial thickness extending through the socket-forming end and up to the spigot-forming end of the pipe segment, and wherein the spigot-forming end of the pipe segment has a radial thickness equated with said radial thickness of said major part of the pipe segment and has a pocket formed therein within the radial thickness of the major part of the pipe segment, such that each pocket mates with a corresponding pocket of an adjacent pipe segment, wherein a sealant is disposed in the mated pockets.