Patent ID: 9562432
Date: 2017-02-07
CPC Classifications: E21F

Claim:
1. An inflatable air barrier for a passageway extending between a first area and a second area, the passageway being defined by an upper surface, a lower surface, a first lateral surface and a second lateral surface, the inflatable air barrier comprising: an inflatable tube having an inflated state and a deflated state, the inflatable tube being manually deformable in the inflated state from a normal shape to a manually deformed shape, the inflatable tube to extend across the passageway with ends to be urged against the first lateral surface and the second lateral surface of the passageway to provide a pneumatic seal within the passageway between the inflatable tube and the first and second lateral surfaces of the passageway when the inflatable tube is in the inflated state while in the normal shape, an access opening through the passageway to be provided when the inflatable tube is in the inflated state while in the manually deformed shape.