US Patent 11193300 Containment airlock comprising an articulated, collapsible self-supporting frame

A containment airlock, in particular an airlock for intervention on a site likely to be contaminated with radiation, asbestos and biological and/or chemical agents. The containment airlock includes a self-supporting frame and a flexible containment shell. The shell is configured to be assembled with the frame. The frame is articulated so as to be extensible between a folded storage position and an extended intervention position. The frame includes articulated reinforcement rods. The articulated reinforcement rods include rigid segments and at least one intermediate articulation connecting the segments.