DISPOSITIF DE PORTE RESISTANT A L'ACTION DU VENT, AVEC SYSTEME DE BARRETTES DE RETENUE

摘要

A vertically movable door curtain has a plurality of parallel restraining bars (19) affixed to its marginal edges, each bar being movable within a guide channel 6 and engageable with inwardly directed locking flanges (9), thereby to hold the curtain against withdrawal from the guide channels when the curtain is strained by wind forces.