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US 11,400,758 B2Granted
Tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorTomoki Kato
Life of this patent
Estimating the term…
Abstract
A tire with a tread reinforcing layer that includes a ply reinforcing structure formed by winding a cord-embedded rubber tape circumferentially of the tire. The ply reinforcing structure includes first oblique segments and second oblique segments which intersect with each other to form a mesh structure having rhombic spaces. The circumferential lengths of the rhombic spaces are less than ⅔ times the maximum circumferential length of the ground contacting patch of the tire in its normally loaded state.
Claims11
A tire comprising a toroidal carcass and a tread reinforcing layer disposed radially outside the carcass in a tread portion of the tire, wherein
- the tread reinforcing layer comprises a ply reinforcing structure in which a tape of at least one reinforcing cord coated with topping rubber is wound,
- the ply reinforcing structure comprises
- a plurality of first oblique segments in which the tape is inclined with respect to the tire circumferential direction to one side in the tire axial direction, and
- a plurality of second oblique segments in which the tape is inclined with respect to the tire circumferential direction to the other side in the tire axial direction
- so that the second oblique segments intersect the first oblique segments, and
- the first oblique segments are arranged so that the side edges thereof do not contact with each other, and the second oblique segments are arranged so that the side edges thereof do not contact with each other, whereby the intersecting first and second oblique segments form a mesh structure having rhombic spaces,
- wherein
- circumferential lengths of the rhombic spaces are less than ⅔ times a maximum circumferential length of a ground contacting patch of the tread surface of the tread portion occurred when the tire in a normally loaded state is contacted with a flat horizontal surface at a camber angle of 0 degree,
- the mesh structure is disposed in a middle region between the tire equator and a tread edge on each side of the tire equator, such that the mesh structure is disposed on each side of the tire equator, and
- the ply reinforcing structure comprises, in a crown region including the tire equator, a center spiral structure in which the tape extends circumferentially of the tire and spirally one or more turns, and further
- the ply reinforcing structure comprises, in a shoulder region including the tread edge, a lateral spiral structure in which the tape extends circumferentially of the tire and spirally one or more turns.
8 more elements
A tire comprising a toroidal carcass and a tread reinforcing layer disposed radially outside the carcass in a tread portion of the tire, wherein
- the tread reinforcing layer comprises a ply reinforcing structure in which a tape of at least one reinforcing cord coated with topping rubber is wound,
- the ply reinforcing structure comprises
- a plurality of first oblique segments in which the tape is inclined with respect to the tire circumferential direction to one side in the tire axial direction, and
- a plurality of second oblique segments in which the tape is inclined with respect to the tire circumferential direction to the other side in the tire axial direction
- so that the second oblique segments intersect the first oblique segments, and
- the first oblique segments are arranged so that the side edges thereof do not contact with each other, and the second oblique segments are arranged so that the side edges thereof do not contact with each other, whereby the intersecting first and second oblique segments form a mesh structure having rhombic spaces,
- wherein
- circumferential lengths of the rhombic spaces are less than ⅔ times a maximum circumferential length of a ground contacting patch of the tread surface of the tread portion occurred when the tire in a normally loaded state is contacted with a flat horizontal surface at a camber angle of 0 degree,
- the mesh structure is disposed in a middle region between the tire equator and a tread edge on each side of the tire equator, such that the mesh structure is disposed on each side of the tire equator, and
- the ply reinforcing structure comprises, in a crown region including the tire equator, a center spiral structure in which the tape extends circumferentially of the tire and spirally one or more turns, and further
- the ply reinforcing structure comprises, between the mesh structures on both sides of the tire equator, the center spiral structure in which the tape extends circumferentially of the tire and spirally one or more turns,
- wherein
- the tire includes tread edges on opposite sides of the tire equator, and
- the ply reinforcing structure comprises, in each of two shoulder regions including the respective tread edges, a lateral spiral structure in which the tape extends circumferentially of the tire and spirally one or more turns.
11 more elements
Dependencies are inferred from the claim text.