| 摘要 |
<p>Safety step intended to be anchored in a concrete wall, of the type consisting of an aluminium tubular element (1) whose two branches each comprise, in the vicinity of their end, at least one bilateral anti-extraction sleeve (2, 2'). Its ends (7, 7') are each covered with a ferrule (8) in plastic material, comprising on its outer surface a sawtooth cutout (10) and terminating at its end in a truncated cone (12) which closes off the tubular element (1) whilst its other end comprises a circular shoulder (13) forming a stop, the said ferrules (8) being joined by overmoulding on the said ends (7, 7'), forming a single piece with the tubular element (1).</p> |
