| 摘要 |
A tensioning device for an inflatable structure which includes a deck area to provide a floor for the inflatable structure, an outer inflatable member providing the main flotation for the deck, the outer inflatable member extending around the outer periphery of the deck, and an inner inflatable member which is integrally connected to the deck to provide additional buoyancy to the central area of the deck but primarily to increase the tensioning of the deck of the inflatable structure since a portion of the material of the deck comprises a portion of the walls of the inflatable chamber of the inner inflatable member and as such inflation of the toroidal inner inflatable member causes the lower wall section thereof which itself is a portion of the deck itself to assume a downwardly facing convex arcuate configuration which increases the tension on the deck between the inner and outer inflatable members, the device may alternatively include valves for controlling the buoyancy and tensioning as well as a canopy and a central mast for holding the canopy suspended above the deck, the inner inflatable member preferably comprising a lower wall section which is formed by a portion of the deck area and an upper wall section which is peripherally secured to the lower wall section by connecting tape which is located about the periphery thereof to hermetically seal the inflation chamber of the inner inflatable member to provide the manner of increasing the buoyancy and tensioning of the deck.
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