Patent ID: 9303806
Filing Date: 2016-04-05
CPC Classification: F16L

Claim Text:
1. A closure assembly for terminating an end of a pipe, the closure assembly comprising: an end-cap holding and having fluid-tight connection to a mutually coaxial cylindrical plug and circular collar, the plug and the collar being configurable between respective engaged and disengaged configurations and mutually spaced to provide an annular space therebetween when the plug and collar are in their disengaged configurations, the annular space arranged to receive an end of a pipe arranged coaxially with the plug and collar, the plug and collar being respectively slidable into and over said end of said pipe in use, the plug, when in its engaged configuration, configured to grip an inner face of said pipe and to provide a fluid tight seal against said inner face of said pipe, the collar, when in its engaged configuration, configured to grip an outer face of said pipe and to provide a fluid tight seal against said outer face of said pipe; wherein the plug comprises a central housing carrying a first coaxial tubular engagement assembly extending axially between a distal flange of the central housing and an engagement face of the end-cap, and positioned between the outer face of the central housing and said inner face of said pipe in use, wherein the first coaxial tubular engagement assembly, when axially compressed, is configured to grip and seal to said inner face of said pipe, whereby configuration of the plug from its disengaged to its engaged configuration is actuated by axial movement of the central housing towards the end-cap whereby axial compression of the first tubular engagement assembly between the distal flange and the engagement face of the end-cap is achieved; wherein the plug and collar are individually configurable between their respective engaged and disengaged configurations.