Patent ID: 6450547
Filing Date: 2002-09-17
Classification: B29C,B29L

Abstract:
Pipe coupling comprising:an outer socket of glass-fibre reinforced plastics material having a first end and a second end, an outer diameter and an inner diameter, and an outer surface and an inner surface; and an inner membrane of elastic material which is attached to the inner surface of the socket from a point adjacent to a recessed from the first end to a point adjacent to and recessed from the second end, and comprising a central sleeve section and, near at least one end of the membrane, a receiving portion for a pipe inserted therein, said receiving portion comprising a cylindrical band of the membrane of constant inner diameter which extends to and is anchored in an end of the socket at which the inner wall of the socket is chamfered outwardly to increase the inner diameter such that an angle V is formed between the inner surface of the socket and the inner surface of the chamfered portion.