DEVICE FOR REPLACEMENT OF UNDERGROUND PIPE LINE Russian patent published in 1996 - IPC

FIELD: construction. SUBSTANCE: device has percussion mechanism, head with a socket for receiving the front end of a new pipe line and facility for destroying an old pipe line, and tank connected with the percussion mechanism and interposed between the percussion mechanism and head. A part of the outer surface of the head is conical. The facility for destroying an old pipe line is mounted inside the head or front part of the tank that is coupled with the percussion mechanism through radial ribs. The sides of the tank are provided with ports. EFFECT: enhanced efficiency. 6 cl, 4 dwg