PIPE JOINT Russian patent published in 1995 - IPC

FIELD: pipe line engineering. SUBSTANCE: outer diameter of the pipe end to be joined should be equal to the inner diameter of the next pipe. At least one stop zone having stop surface for the face surface of the next pipe is made above the transition conical region on the outer surface of the pipe end to be joined. The height of the stop zone fits the diameter of the pipe end to be joined. Stop cams, which are uniformly arranged over periphery in the transition region, are made on the stop zone. Some of the cams are separate from each other with partial zones of the conical transition zone. The zone on the conical transition region is ring-shaped. The ring zone additionally bears on axial bearing ribs which pass through the transition region. The stop zone is provided with the stop ring tightly mounted on the conical transition zone. EFFECT: enhanced reliability. 7 cl, 6 dwg