Chemical fusion of non-metallic pipe joints

A coupling joint, said joint comprising:

• an extrudable adhesive that solidifies on being extruded;
• a first socket having an inside diameter, where said first socket has a first mouth that is an open end of the first socket, a self-centering bottom that is an opposing seating end of the first socket, and a substantially cylindrical wall with an inlet, an outlet, and an inner annular channel;
• a second socket having an inside diameter, where said second socket has a second mouth that is an open end of the second socket, a second self-centering bottom that is an opposing seating end of the second socket, and a second substantially cylindrical wall with a second inlet, a second outlet, and a second inner annular channel;
• wherein said first and second sockets are coupled end-to-end at an angle from 45 to 180 degrees;
• a first pipe having a first insertion section with a first end and a first outer annular channel, where said first insertion section of the first pipe is inserted into the open end of the first socket, said pipe having an outside diameter that is less than the inside diameter of the first socket, where the difference in diameters defines a first gap and where the outer annular channel lines up with the inner annular channel therein forming a first interlocking keyway filled with the extrudable adhesive;
• a second pipe having a second insertion section with a second end and a second outer annular channel, where said second insertion section of the second pipe is inserted into the second socket, said second pipe having a second outside diameter that is less than the inside diameter of the second socket, where the difference in diameters defines a second gap and where the second outer annular channel lines up with the second inner annular channel therein forming a second interlocking keyway filled with the extrudable adhesive;
• a first flanged annular ring, where said first annular ring has a first inside diameter that enables it to slide over the first pipe and a first thickness that is comparable to the first gap, and where the first annular ring has a first flange has a first width that is sufficient to cap the first mouth of the first socket;
• a second flanged annular ring, where said second annular ring has a second inside diameter that enables it to slide over the second pipe and a second thickness that is comparable to the second gap, and where the second annular ring has a second flange has a second width that is sufficient to cap the second mouth of the second socket;
• a temporary clamp that secures the coupling joint while the extrudable adhesive is being extruded into the coupling joint and until the adhesive has solidified;
• and
• wherein, said coupling joint is fully formed after the adhesive solidifies, therein forming, a first and second mechanical key in the first and second interlocking keyways.