Coupler for, e.g. joining pipes, connecting pipe fittings and branches has coupling ring wound helically with conducting wire, the ring having a cross-section to fit a gap between a socket on a pipe end and another pipe end

摘要

A coupler (5) comprises a coupling ring wound helically with a conducting wire (9). The ring has a cross-section to fit a gap between a socket (3) on an end of a pipe (1) and a plain end (2) of another pipe (4) end inserted into the socket.