Self-inflatable hollow bodies for use as floats and for like purposes

摘要: The present invention relates to self-inflatable hollow bodies made of relatively flexible, strong, air-impervious sheet material, which comprise a top portion and bottom substantially the same relative size configuration, marginal edges said portions being connected in airtight relation by means foldable or sufficient height form hollow, hermetically sealed, body provided with an air inlet exhaust valve permits be drawn into when is opened moved spaced extended position respect closed self-inflative formed thus retain within provide self-inflated cushion, pillow, mattress like article manufacture. As for moving from their normal, juxtaposed readily positions body, there pair opposed members whose upper lower are secured aligned portions, sufficiently stiff so strengthening reinforcing stiffer more rigid than remaining body. When its collapsed condition relation, disposed parallel plane portion, manually automatically at right angles plane, they act as levers cause separated extent such separation limited connect portions. It provision opposed, stiffened upon manual automatic operation thereof effect air-filled constitutes important feature distinguishes invention, patentable sense, pneumatic cushions prior art. device may normal flat constructed arranged that movement entirely automatic, effected novel associated each will move portion.