Ausdehnbarer Schutz mit Mitteln zur Erkennung der Abnutzung, einer Zündungsgefahr oder einer Flamme und mit dem Schutz versehene Maschine

摘要

The extendable shield, designed to cover a high-energy beam such as a laser on part of its trajectory between two optical elements, has its inner surface facing the beam fitted with a detector in the form of at least one conductor wire that can carry a current. The wire can be broken by a mechanical stress above a set level or by high temperature caused by the laser beam or a flame, interrupting the current passing through it and warning of shield wear or the risk of fire. The detector can be used to set off a warning signal or switch off the laser beam.