Patent ID: 7681929

Claim:
A pipe coupler for coupling pipe of dissimilar composition comprising: a housing unit having a housing assembly wherein the housing assembly includes: a substantially cylindrical housing having a stub end and a bell end with a hollow passage from the stub end to the bell end, the housing having a primarily plastic composition with an embedded anchor ring at the bell end wherein the anchor ring includes a plurality of threaded radial holes and a plurality of threaded axial holes off-set from the radial holes; a set of gripping bolts having ends adapted to physically engage an outer surface of a pipe inserted into the bell end of the housing; a sealing ring, sized to encompass the outer surface of a pipe inserted into the bell end of the housing; a compressor ring, sized to slip over the end of a pipe inserted into the bell end of the housing, the compressor ring having a plurality of axial holes allignable with the axial threaded holes of the anchor ring, and; a set of connection screws that connect the compressor ring to the anchor ring with the sealing ring positioned between the compressor ring and the anchor ring.