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EP 0292765 B1 19930908 - METHOD FOR WELDING IMPERVIOUS MEMBRANES IN UNDERGROUND WALLS

Title (en)

METHOD FOR WELDING IMPERVIOUS MEMBRANES IN UNDERGROUND WALLS

Publication

EP 0292765 B1 19930908 (DE)

Application

EP 88107391 A 19880507

Priority

DE 3717999 A 19870529
DE 3720670 A 19870623

Abstract (en)

[origin: EP0292765A1] To connect overlapping impervious membranes (2, 3) in ground channels, housings (4, 5) are used which span the overlapping area and are pumped empty by bentonite so that the overlapping area can be cleaned and can be welded by means of commercially available welding appliances. <IMAGE>

IPC 1-7

E02D 19/18

IPC 8 full level

E02D 19/16 (2006.01); E02D 19/18 (2006.01)

CPC (source: EP US)

E02D 19/18 (2013.01 - EP US); E02D 19/185 (2013.01 - EP US)

Citation (examination)

DE 3712722 A1 19881110 - NIEDERBERG CHEMIE [DE]

Designated contracting state (EPC)

AT BE DE FR GB NL

DOCDB simple family (publication)

EP 0292765 A1 19881130; EP 0292765 B1 19930908; DE 3720670 A1 19890112; DE 3883845 D1 19931014; JP S646417 A 19890111; US 4900195 A 19900213

DOCDB simple family (application)

EP 88107391 A 19880507; DE 3720670 A 19870623; DE 3883845 T 19880507; JP 12856588 A 19880527; US 20149388 A 19880531