| 摘要 |
The present invention relates to an improved barrier arrangement to inhibit fluid passing through a structural opening. The barrier arrangement comprises a main frame structure which is expandable in a first direction to engage the barrier arrangement with a structural opening and the arrangement further comprises a frame expansion element which is moveable relative to the main frame structure between a contracted and an expanded configuration to enable expansion of the barrier arrangement in a second direction to further engage the barrier arrangement in a second direction with a structural opening. In the expanded configuration a separation opening is defined between the main frame structure and the frame expansion element and as such a projection is provided which is arranged to substantially occlude the separation opening, wherein the frame expansion element, projection and main frame structure each comprise outwardly facing abutment surfaces facing the first direction and being coplanar in the expanded configuration. |
