EP 0319972 B1 19930310 - PROCESS FOR MAKING AND/OR FOR TREATING CONCRETE BLOCKS
Title (en)
PROCESS FOR MAKING AND/OR FOR TREATING CONCRETE BLOCKS
Publication
Application
Priority
DE 3741618 A 19871209
Abstract (en)
[origin: EP0319972A2] Process for making and/or for treating concrete blocks which are produced in moulds filled with concrete and are embossed on their surface by means of stamping, in which arrangement the stamps have recesses or projections with undercuts and thus rip, roughen or damage the surface of the concrete blocks, and, in a subsequent operation, the surface or edges of the concrete blocks are freed of loose parts and/or are additionally roughened or damaged. <IMAGE>
IPC 1-7
IPC 8 full level
B28B 3/02 (2006.01); B28B 7/00 (2006.01); B28B 11/08 (2006.01); B28B 11/18 (2006.01); B28B 3/06 (2006.01)
CPC (source: EP)
B28B 3/021 (2013.01); B28B 7/007 (2013.01); B28B 7/0085 (2013.01); B28B 11/0818 (2013.01); B28B 11/18 (2013.01); B28B 3/06 (2013.01)
Designated contracting state (EPC)
BE CH DE FR LI LU NL
DOCDB simple family (publication)
EP 0319972 A2 19890614; EP 0319972 A3 19900606; EP 0319972 B1 19930310; DE 3741618 A1 19890622; DE 3879123 D1 19930415
DOCDB simple family (application)
EP 88120518 A 19881208; DE 3741618 A 19871209; DE 3879123 T 19881208