Patent ID: 7490861
Filing Date: 2009-02-17
Classification: B29C,F16L

Abstract:
1. An electrofusion coupling for joining together two or more sections of pipe or for joining a section of pipe and a pipework fitting, said coupling comprising: a first part having a first internal diameter at a first body portion that forms a sliding fit with a first pipe section and a second internal diameter at a second body portion, the second internal diameter at the second body portion of the first part being larger than the first internal diameter at the first body portion of the first part, the first part further comprising: a second part having a first internal diameter at a first body portion that forms a sliding fit with a second pipe section and an outside diameter at a second body portion that forms a sliding fit with the second internal diameter of the second body portion of the first part such that the two parts can nest together with an overlapping region, the second part further comprising: wherein the first part can be used independently of the second part to join a section of pipe to a pipe or pipework fitting or the first and second parts can be used in combination to join two adjacent sections of pipe.