Apparatus for sealing a hole in a wall

摘要

An apparatus for sealing a hole in a wall (4), the wall in use dividing a region of relative high pressure from a region of relative low pressure, the apparatus comprising an elongate stem (2) connected at one end to a sealing member (3) which extends substantially radially from the major axis of said stem in an extended state such that, in use, said relative high pressure acts to seal the sealing member in the extended state against the wall, wherein said sealing member is resiliently deformable from said extended state into a collapsed state in which the sealing member is folded towards the stem, and into an everted state in which the sealing means is folded away from the stem. Said sealing member may when in its extended state form a dome shape which acts to maintain an air gap around the hole.

主权项

1. An apparatus for sealing a hole in a wall, wherein said wall is a barrier between a first and second region, each region having a fluid pressure, the fluid pressure of the first region being greater than the fluid pressure of the second region, the apparatus comprising an elongate stem connected at one end to a sealing member which extends substantially radially from the major axis of said stem in an extended state such that, in use, the fluid pressure in the first region acts to seal the sealing member in the extended state against the wall, wherein said sealing member is resiliency deformable from said extended state into a collapsed state in which the sealing member is folded towards the stem, and into an everted state in which the sealing means is folded away from the stem.