CONNECTION OF DRAIN PIPES Russian patent published in 2013 - IPC E02B11/00 

FIELD: construction.

SUBSTANCE: connection of drain pipes 1 and 2 includes a coupling placed onto end sections of pipes, in the form of a flexible toroid-shaped chamber 4 with a filler 5 from an elastic compressible material having a toroid shape, the surface of which is coated with an anti-friction lubricant. The toroid-shaped chamber 4 is made from a non-elastic shell, and end sections of drain pipes are made with longitudinal rounded corrugations 6. The outer perimeter of cross section of the corrugated part of pipes is equal to the perimeter of the cross section of the outer surface of the chamber shell, and length of corrugations on each end section of pipes is equal to the coupling length.

EFFECT: invention achieves required density of connection of drainage pipes and simplified coupling design.

2 dwg