A deformable mechanical pipe coupling is disclosed. The coupling has a plurality of interconnectable segments that straddle the ends of pipe elements to be joined. The segments have arcuate surfaces that engage outer surfaces of the pipe elements. The outer surfaces subtend an angle of less than 180°...http://www.google.com/patents/US20080007061?utm_source=gb-gplus-sharePatent US20080007061 - Deformable mechanical pipe coupling
