Patent ID: 8881784

Claim:
Unpuncturable inner tube for a wheel equipped with any type of pneumatic tire characterized in that it consists in: a/ a cluster of independent gas tight rubber bladders ( 1 ), all identical, and of an initial diameter varying from 1 inch to a few inches, said bladders being each fitted with a sensitive mini inlet non return valve ( 9 ) going tightly through its wall and being fed by a connector ( 9 . 6 ), b/ an inflating gas distribution cord ( 2 ) made of hollow small diameter flexible piping and composed of a main cord ( 2 . 1 ) pneumatically connected on one side to an inflation valve ( 3 ) via a cord feeding branch ( 2 . 4 ), and feeding along its circular path a plurality of primary distribution branches ( 2 . 2 ) radlaly connected to it, said primary distributions branches feeding each a plurality of secondary distribution branches ( 2 . 3 ) in turn connected on their free end via said connectors ( 9 . 6 ) to said bladders in a quantity according to tire characteristics, c/ a venting system ( 6 or 7 and 8 ), d/ a conditioning net ( 20 ) made up of a fibre mesh of about 1 centimeters by 1 centimeters, and connected by knots, said net enclosing loosely said gas distribution cord fitted with said clusters of bladders and being sized to fill entirely the tire cavity after inflation of said bladders.