Global Patent Index - EP 0705213 A1

EP 0705213 A1 19960410 - METHOD AND APPARATUS FOR THE TRANSPORTATION OF CONCRETE AND THE LIKE MATERIAL IN PIPELINES

Title (en)

METHOD AND APPARATUS FOR THE TRANSPORTATION OF CONCRETE AND THE LIKE MATERIAL IN PIPELINES

Title (de)

VERFAHREN UND VORRICHTUNG ZUM TRANSPORT VON BETON UND ÄHNLICHEN MISCHUNGEN IN ROHRLEITUNGEN

Title (fr)

PROCEDE ET APPAREIL POUR LE TRANSPORT DE BETON ET DE MATERIAUX SIMILAIRES DANS DES PIPELINES

Publication

EP 0705213 A1 19960410 (EN)

Application

EP 94920961 A 19940620

Priority

  • EP 9402007 W 19940620
  • HR P940333 A 19940524
  • HR P940332 A 19940103
  • HR P931530 A 19930903
  • HR P930992 A 19930624

Abstract (en)

[origin: WO9500425A1] A method and an apparatus for the transportation of shotcrete and pumped concrete mix of stiff plastic consistency (12) in pipelines (I, II, IV) comprises the injection of a fluid through perforations (10) provided in the pipe (1) surrounding the shotcrete or pumped concrete mix (12) to be transported. The fluid may be compressed air, foam or liquid. Thereby friction between the transported mass and the inside of the pipeline is substantially reduced. The fluid may be guided through the perforations (10) through a mid-pipe-wall space (2) between an outer pipe (4) and an inner pipe (1) or a tube or a system of connected cavities (2A) with perforations (10) spirally implanted in a single-wall pipeline (1 and 4). The pipeline can abruptly rotate for 180 degrees clockwise and conterclockwise with stopping and pausing between turnarounds, providing reduced adhesion and better homogeneity of the mix passing through the pipeline.

IPC 1-7

B65G 53/32

IPC 8 full level

B65G 53/30 (2006.01); B65G 53/32 (2006.01); B65G 53/52 (2006.01)

CPC (source: EP)

B65G 53/32 (2013.01); B65G 53/521 (2013.01)

Citation (search report)

See references of WO 9500425A1

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

WO 9500425 A1 19950105; AU 7186694 A 19950117; CA 2166098 A1 19950105; CZ 337095 A3 19970212; EP 0705213 A1 19960410; JP H09504498 A 19970506; NO 955086 D0 19951215; NO 955086 L 19951215; SK 163495 A3 19960904

DOCDB simple family (application)

EP 9402007 W 19940620; AU 7186694 A 19940620; CA 2166098 A 19940620; CZ 337095 A 19940620; EP 94920961 A 19940620; JP 50243395 A 19940620; NO 955086 A 19951215; SK 163495 A 19940620