EP 0969155 A3 20001206 - Process of replacement of subterranean pipes
Title (en)
Process of replacement of subterranean pipes
Title (de)
Verfahren zum Auswechseln im Erdreich verlegter Rohre
Title (fr)
Procédé de remplacement des conduits souterrains
Publication
Application
Priority
DE 19829667 A 19980703
Abstract (en)
[origin: DE19829667C1] The method of changing a buried pipeline has the old pipe overbored out by a drill carriage with a drill crown and an over bore rod. The old pipe is extracted by a twisting puller connected to the drill drive motor. The puller acts on the rear end of the old pipe in an insertion group. The puller is attached to the new pipe. The claims include a machine for performing the method
IPC 1-7
IPC 8 full level
CPC (source: EP)
Citation (search report)
- [X] EP 0748971 A2 19961218 - BERLINER WASSER BETRIEBE [DE]
- [DA] DE 3733463 C1 19890330 - KARL WEISS GMBH & CO
- [A] DE 3938765 A1 19910529 - BILFINGER BERGER BAU [DE]
- [A] DE 3832214 C1 19891228
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DE 19829667 C1 19991118; EP 0969155 A2 20000105; EP 0969155 A3 20001206
DOCDB simple family (application)
DE 19829667 A 19980703; EP 99112505 A 19990701