EP 0451683 A2 19911016 - Propulsion process of buried pipe.
Title (en)
Propulsion process of buried pipe.
Title (de)
Antriebsvorrichtung für ein einzugrabendes Rohr.
Title (fr)
Procédé de propulsion pour un tuyau enterré.
Publication
Application
Priority
JP 9186390 A 19900405
Abstract (en)
In a propulsion process of buried pipe, an endless pipe to be buried is formed by sequentially curving a pipe material (62) of long hoop shape made of a plastic material, and this endless pipe is successively inserted and propelled into the burying hole while forming the burying hole by propelling a leader (10) in the ground. <IMAGE>
IPC 1-7
IPC 8 full level
E21B 7/20 (2006.01); E21B 17/00 (2006.01); E21B 17/20 (2006.01); E21B 19/22 (2006.01); E21D 9/06 (2006.01); F16L 1/024 (2006.01)
CPC (source: EP)
E21B 7/201 (2013.01); E21B 17/00 (2013.01); E21B 17/20 (2013.01); E21B 19/22 (2013.01)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0451683 A2 19911016; EP 0451683 A3 19911023; AU 635626 B2 19930325; AU 7410791 A 19911010; JP H03290590 A 19911220; JP H0730671 B2 19950410
DOCDB simple family (application)
EP 91105266 A 19910403; AU 7410791 A 19910405; JP 9186390 A 19900405