Patent ID: 7108294

Claim:
A composite, metal and plastic pipe assembly, comprising: first and second metal pipes having respective first and second ends; a first plastic cuff positioned around the circumference of the first pipe end, the first cuff having an annular groove defined between radially inner and outer walls of the first cuff and extending in a longitudinal direction of the first pipe and receiving the first pipe end therein; a second plastic cuff positioned around the circumference of the second pipe end, the second cuff having an annular groove defined between radially inner and outer walls of the second cuff and extending in a longitudinal direction of the second pipe end and receiving the second pipe end therein; the first cuff forming a spigot member extending around the circumference of the first pipe end and the second cuff forming a bell member extending around the circumference of the second pipe end; and substantially the entire first cuff being inserted into the second cuff, thereby forming a mating bell and spigot coupling.