Tire with a cellular layer
AssigneeMichelin Recherche et Technique S.A.
InventorJose Merino-Lopez
Life of this patent
Estimating the term…
Abstract
A tire with a cellular layer is provided. The tire includes a tire structure formed of at least one crown extended by two sidewalls and two beads. A base of each of the two beads is configured to be mounted onto a rim seat. The tire also includes a carcass-type reinforcing structure anchored into the two beads, and a layer that includes a cellular material, also referred to as a cellular layer. The cellular layer is positioned on an inner wall of the tire structure, such that the cellular layer is bonded to the tire structure over at most over 20% of a surface of the cellular layer and is not bonded to the tire structure elsewhere on the surface.
Claims15
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 (Lca) in an axial cross section is greater than an curved length of the inner wall of the tire structure (Lpa) 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 (Lca) relative to the axial curved length of the inner wall of the tire structure (Lpa) 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.
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 (Lca) in an axial cross section is greater than an curved length of the inner wall of the tire structure (Lpa) 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 (Lca) relative to the axial curved length of the inner wall of the tire structure (Lpa) results in folds that are pressed towards the inner wall of the tire structure, and
- wherein the cellular layer includes a first layer made of a predominantly closed-cell cellular material and a second layer made of an open-cell cellular material.
Dependencies are inferred from the claim text.