BUT JOINT FOR METAL-PLASTIC PIPE LINES Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: joint has sealing links of armored pipes. The adapting rings are rigidly secured with the reinforcement and interconnected through connecting members. The connecting members are made up as parts of metallic pipes. The inner diameter of the parts is greater than the outer diameter of the links. Bushing and diverging polymeric shells are received in the butt between the links. The diverging link is connected with the part and provided with a groove for rubber ring. The bushing shell is provided with the groove for the other rubber ring. The rings interact with the bushing and diverging shells. EFFECT: enhanced reliability. 1 dwg