Pneumatic tire
AssigneeThe Yokohama Rubber Co., Ltd.
InventorToyoaki Endo
Life of this patent
Estimating the term…
Abstract
A tread pattern of a pneumatic tire includes three or more circumferential main grooves extending in a tire circumferential direction, a land portion defined by the circumferential main grooves, and a sipe provided in the land portion. At least one edge of edges on both sides of the land portion in a tire width direction is a zigzag edge. The zigzag edge has a zigzag shape with recesses/protrusions that has a position periodically changing in the tire width direction. The sipe is a composite sipe including a two-dimensional portion and a three-dimensional portion, and the three-dimensional portion is connected to the zigzag edge.
Claims11
A pneumatic tire, comprising:
- a tread pattern, the tread pattern comprising
- three or more circumferential main grooves extending in a tire circumferential direction;
- a land portion defined by two of the circumferential main grooves of the three or more circumferential main grooves;
- and
- a plurality of sipes provided in the land portion,
- one edge of edges on both sides of the land portion in a tire width direction being a zigzag edge and an other edge of the edges on both sides of the land portion being a straight edge with no recesses and protrusions;
- the zigzag edge having a zigzag shape with recesses and protrusions that has a position periodically changing in the tire width direction;
- the sipes being composite sipes comprising a two-dimensional portion and a three-dimensional portion, the three-dimensional portion being provided only at either one end of the sipes in the tire width direction;
- and
- the three-dimensional portion of all sipes in the land portion being connected to a same edge, the same edge being the zigzag edge.
A pneumatic tire, comprising:
- a tread pattern, the tread pattern comprising
- three or more circumferential main grooves extending in a tire circumferential direction;
- a shoulder land portion defined by one of the circumferential main grooves of the three or more circumferential main grooves and comprising a ground contact edge;
- and
- a plurality of sipes provided in the shoulder land portion and extending in a tire width direction, one end of the sipes being connected to the circumferential main groove and an other end of the sipes being on an outer side of a tire ground contact edge,
- the one of the main grooves defining the shoulder land portion forming a zigzag shape on both sides of the one of the main grooves in the tire width direction, including on one edge of the shoulder land portion;
- the zigzag edge having a zigzag shape with recesses and protrusions that has a position periodically changing in the tire width direction;
- the sipes being composite sipes comprising a two-dimensional portion and a three-dimensional portion, the three-dimensional portion being provided only at either one end of the sipes in the tire width direction;
- and
- the three-dimensional portion of all sipes in the land portion being connected to the zigzag shape of the one of the main grooves.
Dependencies are inferred from the claim text.