Patent ID: 7118137
Filing Date: 2006-10-10
Classification: F16L,G01M,Y10S

Abstract:
1. A testable pipe joint for coupling first and second pipe sections of a pipe system, comprising: a spigot ring for use with the first pipe section, the spigot ring having an exterior surface and an interior surface; a first circumferential groove formed in said exterior surface of said spigot ring for receiving a test gasket; at least one second circumferential groove formed in said exterior surface of said spigot ring for receiving a pipe seal gasket; a bell ring for use with the second pipe section and configured to engage said spigot ring, said bell ring having an interior surface sized to receive at least a portion of said spigot ring, said interior surface of said bell ring including a circumferential groove; a locking ring disposed within said circumferential groove of said bell ring and having a diameter adjustable between an expanded state and a contracted state, wherein said locking ring accommodates engagement of said spigot ring and said bell ring in said expanded state, and wherein said locking ring clamps said bell ring and said spigot ring in said contracted state, said locking ring having first and second ends selectively adjustable between said expanded and contracted states by a fastener, said fastener operatively securing said first and second ends of said locking ring; a test gasket disposed within said first circumferential groove of said spigot ring; a pipe seal gasket disposed within said second circumferential groove of said spigot ring, said test gasket and said pipe seal gasket defining an annular space therebetween; and a pressure port in fluid communication with said annular space between said test gasket and said pipe seal gasket.