Pneumatic tire tread with groove unit comprising a main groove and an auxiliary groove both meandering in a wavy or zigzag manner
AssigneeThe Yokohama Rubber Co., Ltd.
InventorNaoko Suzuki
Life of this patent
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Abstract
A pneumatic tire comprising a tread portion, side wall portions, and bead portions. The tread portion of said pneumatic tire includes at least one groove unit including a main groove extending in a tire circumferential direction and an auxiliary groove extending in the tire circumferential direction that has a smaller width than that of the main groove. The main groove and/or the auxiliary groove meanders in a wave or zigzag manner, and the main groove and the auxiliary groove intersect so as to intertwine with each other. Additionally, a rib portion extending in the tire circumferential direction is disposed adjacent along the groove unit including the main groove and the auxiliary groove.
Claims20
A pneumatic tire comprising a tread portion extending in a tire circumferential direction to form an annular shape, a pair of side wall portions disposed on both sides of the tread portion, and a pair of bead portions disposed on inner sides in a tire radial direction of the side wall portions, wherein
- the tread portion of said pneumatic tire comprising at least one groove unit comprising a main groove extending in the tire circumferential direction and an auxiliary groove extending in the tire circumferential direction that has a smaller width than that of the main groove,
- both the main groove and the auxiliary groove meanders in a wave or zigzag manner,
- the main groove and the auxiliary groove intersect so as to intertwine with each other,
- a rib portion extending in the tire circumferential direction is disposed adjacent along the groove unit comprising the main groove and the auxiliary groove,
- at least two of the groove units are provided in the tread portion, and
- phases of the groove units differ from each other.
A pneumatic tire comprising a tread portion extending in a tire circumferential direction to form an annular shape, a pair of side wall portions disposed on both sides of the tread portion, and a pair of bead portions disposed on inner sides in a tire radial direction of the side wall portions, wherein
- the tread portion of said pneumatic tire comprising at least one groove unit comprising a main groove extending in the tire circumferential direction and an auxiliary groove extending in the tire circumferential direction that has a smaller width than that of the main groove,
- both the main groove and the auxiliary groove meanders in a wave or zigzag manner,
- the main groove and the auxiliary groove intersect so as to intertwine with each other,
- a rib portion extending in the tire circumferential direction is disposed adjacent along the groove unit comprising the main groove and the auxiliary groove,
- at least two of the groove units are provided in the tread portion, and
- an amplitude of the main groove included in a first groove unit of the groove units and an amplitude of the main groove included in second groove unit of the groove units differ from each other.
A pneumatic tire comprising a tread portion extending in a tire circumferential direction to form an annular shape, a pair of side wall portions disposed on both sides of the tread portion, and a pair of bead portions disposed on inner sides in a tire radial direction of the side wall portions, wherein
- the tread portion of said pneumatic tire comprising at least one groove unit comprising a main groove extending in the tire circumferential direction and an auxiliary groove extending in the tire circumferential direction that has a smaller width than that of the main groove,
- both the main groove and the auxiliary groove meanders in a wave or zigzag manner,
- the main groove and the auxiliary groove intersect so as to intertwine with each other,
- a phase of the main groove and a phase of the auxiliary groove differ from each other within the groove unit,
- a phase difference between the phase of the main groove and the auxiliary groove with respect to a period of the main groove is configured so as to be not less than 90° and not more than 270°, and
- a rib portion extending in the tire circumferential direction is disposed adjacent along the groove unit comprising the main groove and the auxiliary groove.
Dependencies are inferred from the claim text.