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US 6,418,991 B1Granted
Puncture proof inner tube
OwnerMichael L. Triceinventor
Life of this patent
Estimating the term…
Abstract
An improved pneumatic tube formed from a semi-rigid, air-tight rubber core encased by a plurality of thin, armoring Kevlar layers bonded to the exterior wall of the core. The composition can be used as inner tubing for cars, bikes, motorcycles, planes, and any kind of vehicle having a pneumatic inner tube. It can also be formed into a puncture proof rubber raft.
Claims1
A pneumatic tube for use in vehicle tires and rafts, consisting of:
- an inner wall defining an air chamber, the inner wall consisting of rubber and having the shape of a hollow toroid, and further being sufficiently thick and rigid so that the inner wall retains the toroid shape when deflated;
- and
- an outer wall bonded to, and concentric with, said inner wall, the outer wall having the shape of a hollow toroid and encasing said inner wall, the outer wall consisting of a synthetic, polymeric armoring material.
Dependencies are inferred from the claim text.