Airtight seal for pressurized hyperbaric chamber

1 . An inflatable chamber comprising:

a chamber wall, and a chamber access opening formed in said chamber wall;

a chamber closure formed in said chamber wall at said chamber access opening, said chamber closure opening and closing to permit and deny entry through said chamber access opening;

a panel having a panel outer perimeter, said panel directly coupled with said chamber wall at a panel coupling point at the panel outer perimeter to form an airtight seal between said chamber wall and said panel at the panel outer perimeter, and forming a pocket between said chamber wall and said panel;

a panel access opening formed in said panel;

a panel closure formed in said panel at said panel access opening, said panel closure opening and closing to permit and deny entry through said panel access opening;

a seal flap located in said pocket between said chamber wall and said panel, wherein said seal flap provides an airtight seal that seals said chamber closure; and

a fastening feature inside said pocket and at least partly coupling said seal flap directly to said chamber wall at a fastening coupling point located inward of the panel coupling point.

2 . The chamber of claim 1 , wherein said chamber closure is sewn to said chamber wall to form a seam, and said seal flap provides an airtight seal that seals said seam.

3 . The chamber of claim 1 , said fastening feature comprising a fastening strip sewn to said chamber wall and having a strip surface that removably couples with said seal flap to retain said seal flap in position within said pocket.

4 . The chamber of claim 3 , wherein said strip surface comprises a hook feature, and said seal flap has a loop feature that removably engages with said hook feature.

5 . The chamber of claim 1 , said seal flap having one side coupled to said chamber wall by said fastening feature, and an opposite unattached side.

6 . The chamber of claim 1 , said chamber wall having an inner surface and an outer surface, said panel sealed with the inner surface of said chamber wall to provide the airtight seal.

7 . The chamber of claim 1 , wherein a user can pass through said chamber access and said panel access when said chamber closure and said panel closure are open, and wherein a user cannot pass through said chamber access and said panel access when said chamber closure and said panel closure are closed.

8 . The chamber of claim 1 , wherein when the chamber is pressurized, said seal flap is pressed toward said chamber wall to further seal said chamber closure.

9 . The chamber of claim 1 , wherein when the chamber is pressurized, said seal flap is pressed toward said chamber wall to further seal said panel closure.

10 . The chamber of claim 1 , wherein said chamber wall is flexible.

11 . The chamber of claim 1 , wherein said chamber wall is non-rigid.

12 . The chamber of claim 1 , wherein said chamber is a hyperbaric chamber.

13 . The chamber of claim 1 , wherein said pocket fully encloses said seal flap and fully surrounds the entirety of said chamber closure.

14 . The chamber of claim 1 , wherein said chamber closure has an elongated closure side and a closure top, and said fastening feature extends along the elongated closure side and above the closure top.

15 . An inflatable chamber comprising:

a chamber wall with a chamber zipper formed therein;

a panel having a panel zipper formed therein and a panel perimeter, said panel perimeter sealed directly to said chamber wall about said chamber zipper in an airtight manner to form a pocket between said chamber wall and said panel;

a seal flap positioned in said pocket to provide an airtight seal at said chamber zipper; and

a fastening feature inside said pocket and at least partly coupling said seal flap directly to said chamber wall.

16 . The chamber of claim 15 , wherein said chamber zipper is sewn to said chamber wall to form a seam, and said seal flap provides an airtight seal that seals said seam.

17 . The chamber of claim 15 , said fastening feature comprising a fastening strip sewn to said chamber wall and having a strip surface that removably couples with said seal flap to retain said seal flap in position within said pocket.

18 . The chamber of claim 17 , wherein said strip surface comprises a hook feature, and said seal flap has a loop feature that removably engages with said hook feature.

19 . The chamber of claim 15 , wherein said chamber zipper has an elongated zipper side and a zipper top, and said fastening feature extends along the elongated zipper side and above the zipper top.