Arrangement for closing an opening to prevent fire propagation comprises a displaceable cover element and an expandable hollow sealing element which, when not in use, is joined to a vacuum source

摘要

The arrangement for closing an opening (5A) to prevent fire propagation comprises a displaceable cover element (7A) and an expandable hollow sealing element (4) which, when not in use, is joined to a vacuum source (P). An independent claim is also included for an expandable sealing element of the proposed closure arrangement.