Pneumatic Tire
AssigneeThe Yokohama Rubber Co., Ltd.
InventorTatsuro Shinzawa
Life of this patent
Estimating the term…
Abstract
In a pneumatic tire, first and second sound absorbing members are adhered to an inner surface of a tread, have a total volume ranging from 10% to 40% of a capacity of a tire cavity, and are separated from each other by 60% of the width of a center land. The first sound absorbing member is on one side in a lateral direction with respect to a position of 40% of a width of the center land from one end of the center land on one side in the lateral direction to the other side in the lateral direction. The second sound absorbing member is on the other side in the lateral direction with respect to a position of 40% of the width of the center land from the other end of the center land in the lateral direction to the one side in the lateral direction.
Claims9
A pneumatic tire, comprising:
- a tread portion extending in a tire circumferential direction and having an annular shape;
- a pair of side wall portions disposed on both sides of the tread portion;
- a pair of bead portions disposed inward of the pair of side wall portions in a tire radial direction;
- a carcass layer mounted between the pair of bead portions;
- a plurality of belt layers disposed on an outer circumferential side of the carcass layer in the tread portion;
- circumferential grooves extending along the tire circumferential direction in a tire outer surface of the tread portion;
- and
- land portions defined between the circumferential grooves that are adjacent to each other in a tire lateral direction, wherein
- a number of the circumferential grooves is two or more,
- a number of the land portions is one or more,
- the one or more land portions include a center land portion continuously extending along an entire circumference of the tire and being disposed on a tire equator,
- a first sound absorbing member and a second sound absorbing member are adhered to a tire inner surface of the tread portion,
- the first sound absorbing member and the second sound absorbing member have a total volume ranging from 10% to 40% of a capacity of a tire cavity,
- the first sound absorbing member is disposed on one side in the tire lateral direction with respect to a position of 40% of a width Wc of the center land portion from one end portion of the center land portion on one side in the tire lateral direction to an other side in the tire lateral direction,
- the second sound absorbing member is disposed on the other side in the tire lateral direction with respect to a position of 40% of the width Wc of the center land portion from one end portion of the center land portion on the other side in the tire lateral direction to the one side in the tire lateral direction, and
- the first sound absorbing member and the second sound absorbing member are separated from each other by 60% or more of the width We of the center land portion.
Dependencies are inferred from the claim text.