RUBBER-CORD BRANCH PIPE Russian patent published in 2007 - IPC F16L33/22 

FIELD: pipeline engineering.

SUBSTANCE: rubber-cord branch pipe comprises external and sealing layers of rubber, reinforcing layers of cord, side rings, and face fastening and connecting flanges. Each of the side rings is torus-shaped and is provided with the piping projections whose end is set in the opening made in the fastening flange. The surface of the flange is shaped into a truncated cone that interacts with the truncated cone of the torus-shaped side ring through the end section of the cord frame that defines a loop. The connecting flange is in a contact with the sealing layers of the rubber of the side zone of the cord frame and has a contact zone made of a truncated cone that smoothly goes into the arc-shaped projection that points in the direction of the side ring. The end section of the cord frame that project out of the fastening flange is secured to the outer surface of the load-bearing layers of the cord frame.

EFFECT: enhanced reliability.

2 dwg