EP 0089420 A1 19830928 - Method, apparatus and mould for manufacturing concrete tubes.
Title (en)
Method, apparatus and mould for manufacturing concrete tubes.
Title (de)
Verfahren, Vorrichtung und Form zur Herstellung von Betonrohren.
Title (fr)
Procédé, dispositif et moule pour la fabrication de tyaux en béton.
Publication
Application
Priority
EP 82200354 A 19820323
Abstract (en)
In a method of manufacturing concrete tubes (1) adapted to join one another by means of a sleeve-wedge joint, each time a tubular casting (8) is manufactured in a mould (2). Concrete mortar (7) having a high degree of moisture is densified in a mould cavity (6) by subjecting the mould (2) to vibrations, in order to densify the casting (8) at its top side unto a densifying degree, better corresponding to the densifying degree effected below in the casting, an upper mould part (9) is urged in axial direction of the mould cavity (6) unto its position bounding the mould cavity (6), whilst the mould (2) is subjected to vibrations.
IPC 1-7
IPC 8 full level
B28B 21/10 (2006.01); B28B 21/76 (2006.01); B28B 21/86 (2006.01); B28B 21/90 (2006.01)
CPC (source: EP)
B28B 21/10 (2013.01); B28B 21/76 (2013.01); B28B 21/86 (2013.01); B28B 21/90 (2013.01)
Citation (search report)
- GB 2061178 A 19810513 - SKANSKA CEMENTGJUTERIET AB
- GB 1037564 A 19660727 - JOHN DAVRON LTD, et al
- US 2823439 A 19580218 - HENRY SCHMIDGALL HARTZELL
- US 3584356 A 19710615 - JOELSON CARL R
- GB 910067 A 19621107 - WACKER HERMANN, et al
- DE 815171 C 19511001 - JIDELL KARL BERNT
- US 2602979 A 19520715 - BUREN MYERS VAN
- FR 538726 A 19220614 - CALICE & AUBIN A
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 82200354 A 19820323