EP 0706864 A3 19981104 - Process and apparatus for making hollow building blocks
Title (en)
Process and apparatus for making hollow building blocks
Title (de)
Verfahren und Vorrichtung zum Herstellen von Hohlbausteinen
Title (fr)
Dispositif et procédé pour la fabrication de blocs de construction évidés
Publication
Application
Priority
AT 194694 A 19941014
Abstract (en)
[origin: EP0706864A2] Filling mass is placed in a press mould (7) with projecting core spikes (11) where it is compressed by a ram (5) and the blank is shaped by removing the spikes and the mould. Before compression, the spikes are raised above the height of the filling mass in the mould and during compression, they are moved back. The spikes may be raised to the mass level before filling a directly after filling, raised above the level. They may be set to oscillate during filling, compression and removal.
IPC 1-7
IPC 8 full level
B28B 3/02 (2006.01); B28B 3/04 (2006.01); B28B 7/18 (2006.01)
CPC (source: EP)
B28B 3/022 (2013.01); B28B 3/04 (2013.01); B28B 7/183 (2013.01)
Citation (search report)
- [XY] GB 969373 A 19640909 - WHITTAKER & CO LTD C
- [XY] DE 391143 C 19240229 - DUCHSCHER & CIE
- [YA] DE 2837878 A1 19800313 - BUCHER GUYER AG MASCH
- [A] GB 970595 A 19640923 - HARBISON WALKER REFRACTIRIES C
- [A] DE 578845 C 19330624 - MEER AKT GES MASCHF
- [A] DE 360362 C 19221002 - WAGNER OTTO
Designated contracting state (EPC)
BE DE DK FR IT LU NL
DOCDB simple family (publication)
EP 0706864 A2 19960417; EP 0706864 A3 19981104; EP 0706864 B1 20020227; AT 402375 B 19970425; AT A194694 A 19960915; DE 59510075 D1 20020404
DOCDB simple family (application)
EP 95890152 A 19950823; AT 194694 A 19941014; DE 59510075 T 19950823