ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,544,288, issued on Feb. 10, was assigned to Typhoon Water Wares LLC (Pocomoke, Md.).

"Airtight seal for pressurized hyperbaric chamber" was invented by Andrew L. Whitehouse (Pocomoke, Md.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An inflatable chamber has a chamber wall, sealing panel, and seal flap. A chamber zipper is formed in the chamber wall, and a panel zipper is formed in the panel. The panel has a panel perimeter that is sealed to said chamber wall about the chamber zipper in an airtight manner to form a pocket between the chamber wall and the panel. The seal flap is positioned in the pocket to provide an airtight seal at the chamber zipper...