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US 12,594,791 B2Granted
Tire
AssigneeThe Yokohama Rubber Co., Ltd.
InventorReika Tokunaga
Life of this patent
Estimating the term…
Abstract
A tire includes a plurality of circumferential grooves extending in a tire circumferential direction, and a plurality of land portions defined by the circumferential grooves. Further, at least one of the circumferential grooves includes tie bars formed in a groove bottom of the circumferential groove and connecting the land portions adjacent to each other across the circumferential groove. Furthermore, each of the tie bars includes a slit that extends through the tie bar in the tire circumferential direction and that is closed when the tire comes into contact with the ground. In addition, the slit includes an inclined portion inclined with respect to the tire circumferential direction in a tread plan view.
Claims25
A tire, comprising:
- a plurality of circumferential grooves extending in a tire circumferential direction;
- and
- a plurality of land portions defined by the circumferential grooves;
- at least one of the circumferential grooves comprising a tie bar formed in a groove bottom of the at least one of the circumferential grooves and connecting the land portions adjacent to each other across the at least one of the circumferential grooves,
- the tie bar comprising a slit that extends through the tie bar in the tire circumferential direction and that is closed when the tire comes into contact with a ground, and
- a center line of the slit comprising an inclined portion that is inclined with respect to the tire circumferential direction in a tread plan view, wherein
- the tie bar comprises first and second segments defined by the slit,
- an imaginary straight line X passing through midpoints of connection portions of the first and second segments to the land portions is defined, and
- an imaginary straight line passing through both ends of the slit and the imaginary straight line X of the first and second segments are inclined in mutually opposite directions with respect to the tire circumferential direction, wherein
- the slit comprises a bent portion or a curved portion in the tread plan view.
7 more elements
A tire, comprising:
- a plurality of circumferential grooves extending in a tire circumferential direction;
- and
- a plurality of land portions defined by the circumferential grooves;
- at least one of the circumferential grooves comprising a tie bar formed in a groove bottom of the at least one of the circumferential grooves and connecting the land portions adjacent to each other across the at least one of the circumferential grooves,
- the tie bar comprising a slit that extends through the tie bar in the tire circumferential direction and that is closed when the tire comes into contact with a ground,
- a center line of the slit comprising an inclined portion that is inclined with respect to the tire circumferential direction in a tread plan view,
- the land portions comprising a plurality of through narrow grooves extending through the land portions and a plurality of blocks defined by the through narrow grooves,
- the tie bar being disposed between the through narrow grooves adjacent to each other and the tie bar being connected to the blocks, and
- a tangent line of an edge portion of the blocks at a connection position of the tie bar being inclined in one direction with respect to the tire circumferential direction, the tangent line to the edge portion of the block and an imaginary straight line passing through both ends of the slit being inclined in opposite directions to each other with respect to the tire circumferential direction.
6 more elements
A tire, comprising:
- a plurality of circumferential grooves extending in a tire circumferential direction;
- and
- a plurality of land portions defined by the circumferential grooves;
- at least one of the circumferential grooves comprising a tie bar formed in a groove bottom of the at least one of the circumferential grooves and connecting the land portions adjacent to each other across the at least one of the circumferential grooves,
- the tie bar comprising a slit that extends through the tie bar in the tire circumferential direction and that is closed when the tire comes into contact with a ground,
- a center line of the slit comprising an inclined portion that is inclined with respect to the tire circumferential direction in a tread plan view,
- the slit extending straight, without bending, from one edge portion of the tie bar to an other edge portion of the tie bar, and
- the tie bar comprises first and second segments defined by the slit, and a circumferential length L51 of the slit is in a range 0.20≤L51/L52A≤0.95 and a range 0.20≤L51/L52B≤0.95 with respect to circumferential lengths L52A, L52B of connection portions of the first and second segments to the land portions.
5 more elements
Dependencies are inferred from the claim text.