EP 0050075 B1 19860423 - METHOD FOR OBTAINING BLOCKS AND TILES
Title (en)
METHOD FOR OBTAINING BLOCKS AND TILES
Publication
Application
Priority
FR 8021897 A 19801014
Abstract (en)
[origin: EP0050075A2] 1. A method of separating, in a natural stone having either one direction of cleavage plane or plane of lesser cohesion, or cleavage planes or planes of lesser cohesion which are all parallel to one another, along a plane parallel to this direction or to these cleavage planes or planes of lesser cohesion, blocks, flags or slabs which are only connected to the mass in place by the plane along which it is desired to effect the separation, a method characterised in that (1) the block, flag or slab (G) to be produced is subjected to a shearing stress (R1-R2) in relation to the mass (M) from which it is to be separated, this stress being essentially parallel to the plane of fissility, (2) a cleft (L) is started by any method, in the zone subject to shearing, in the plane (K6) along which it is desired to effect the separation, and (3) the propagation of this cleft (L) is ensured in such a way that the propagation face (I) is still subjected, at least in its very large majority, to the shearing stress (R1-R2), it being possible for the sequence of the operations (1) and (2) to be carried out in this order or in reverse order.
IPC 1-7
IPC 8 full level
B28D 1/32 (2006.01)
CPC (source: EP)
B28D 1/32 (2013.01); B28D 1/322 (2013.01)
Designated contracting state (EPC)
AT BE DE GB IT LU NL SE
DOCDB simple family (publication)
EP 0050075 A2 19820421; EP 0050075 A3 19840111; EP 0050075 B1 19860423; AT E19368 T1 19860515; DE 3174475 D1 19860528; ES 506138 A0 19820901; ES 8207021 A1 19820901; FR 2491815 A1 19820416; FR 2491815 B1 19841207; PT 73803 A 19811101; PT 73803 B 19830914
DOCDB simple family (application)
EP 81401540 A 19811005; AT 81401540 T 19811005; DE 3174475 T 19811005; ES 506138 A 19811009; FR 8021897 A 19801014; PT 7380381 A 19811012