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1. (WO2018060933) AIR BAG FOR PUSHING DOWN STONE SLABS

Pub. No.:    WO/2018/060933    International Application No.:    PCT/IB2017/055984
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Fri Sep 29 01:59:59 CEST 2017
IPC: B28D 1/00
B28D 1/32
E21C 47/10
Applicants: TECHNOTRADE S.R.L.
Inventors: PISTOIA, Carlo
Title: AIR BAG FOR PUSHING DOWN STONE SLABS
Abstract:
An air bag (110) for pushing down stone slabs (110), comprising at least two overlapped flexible plane layers welded to each other (111, 112), the air bag (110) configured to be put into a plane cut slit (150) between a quarry wall (140) and a cut stone slab (130) and to be inflated in such a way to push down the stone slab (130), the flexible plane layers (111, 112) forming a corner zone (200), in particular in the corner zone (200) at least one couple of stiff block elements (210, 220) is arranged external to the plane layers (111, 112) and press firmly the layers (111, 112) between each other at the corner zone (200).