Patent ID: 8863799

Claim:
A tire comprising: a tire structure formed of at least one crown extended by two sidewalls and two beads, wherein a base of each of the two beads is adapted for mounting onto a rim seat; a carcass-type reinforcing structure anchored into the two beads; and a cellular layer composed of a cellular material positioned on an inner wall of the tire structure, wherein a surface of the cellular layer is bonded to the tire structure over at most 20% of the surface and the cellular layer is not bonded to the tire structure elsewhere, and wherein an axial curved length of the cellular layer (L ca ) in an axial cross section is greater than an curved length of the inner wall of the tire structure (L pa ) in contact with the cellular layer in a same axial cross section, wherein, when the tire is inflated for operation, the cellular layer is pressed against the inner wall of the tire structure, such that the cellular layer touches substantially an entirety of the inner wall of the tire structure at the axial cross section, and such that an excess in the axial curved length of the cellular layer (L ca ) relative to the axial curved length of the inner wall of the tire structure (L pa ) results in folds that are pressed towards the inner wall of the tire structure, and wherein the cellular layer includes a first non-cellular layer and a second layer made of a predominantly closed-cell cellular material positioned on an innermost side of a tire cavity.