Lokalisierungsvorrichtung von Brüchen in transparenten Scheiben mit wenigstens zwei Schichten, und hergestellte Platte

摘要

Device for locating a crack consisting of at least one break line in a transparent panel comprising at least two layers (12, 14), especially the windscreen of an aircraft cockpit, comprises an opaque or semi-opaque obstacle in the form of a band (20) located between the two adjacent layers and arranged at the border of the operational zone of the panel. The device comprises: (a) two layers with the obstacle located between the layers; (b) two multilayer zones with the obstacle located between the zones; (c) n layers and n-1 obstacles interposed one on the other between two consecutive layers, at least one of which is different. The obstacle is silk screen printing on one of the two facing faces of two adjacent layers. In the case of many obstacles, each one is different from the preceding one in form and/or dimensions and/or color. An Independent claim is given for a transparent multilayer panel for the windscreen of an aircraft cockpit.