US 12,138,969 B2Granted

Pneumatic tire

AssigneeThe Yokohama Rubber Co., Ltd.

InventorMasahiro Naruse

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Abstract

In a pneumatic tire with a carcass layer mounted between a pair of bead portions, a transponder is embedded in an outer side of the carcass layer in the tire width direction, a rubber member having the largest storage modulus at 20° C. of rubber members located on an outer side of the transponder in the tire width direction has a modulus M50out(0° C.) during 50% deformation at 0° C. and a modulus M50out(−20° C.) during 50% deformation at −20° C. that satisfy a relationship 0.50≤M50out(0° C.)/M50out(−20° C.)<1.00, and a rubber member having the largest storage modulus at 20° C. of rubber members located on an inner side of the transponder in the tire width direction has a modulus M50in(0° C.) during 50% deformation at 0° C. and a modulus M50in(−20° C.) during 50% deformation at −20° C. that satisfy a relationship 0.25≤M50in(0° C.)/M50in(−20° C.)<1.00.

Claims22

Dependent claims

A pneumatic tire, comprising:

a tread portion extending in a tire circumferential direction and having an annular shape;
a pair of sidewall portions respectively disposed on both sides of the tread portion;
a pair of bead portions each disposed on an inner side of the pair of sidewall portions in a tire radial direction;
and
a carcass layer mounted between the pair of bead portions;
a transponder being embedded in an outer side of the carcass layer in a tire width direction, a rubber member having a largest storage modulus at 20° C. of rubber members located on an outer side of the transponder in the tire width direction having a modulus M50out(0° C.) during 50% deformation at 0° C. and a modulus M50out(−20° C.) during 50% deformation at −20° C. that satisfy a relationship 0.50≤M50out(0° C.)/M50out(−20° C.)<1.00, and a rubber member having a largest storage modulus at 20° C. of rubber members located on an inner side of the transponder in the tire width direction having a modulus M50in(0° C.) during 50% deformation at 0° C. and a modulus M50in(−20° C.) during 50% deformation at −20° C. that satisfy a relationship 0.25≤M50in(0° C.)/M50in(−20° C.)<1.00.

3 more elements

A pneumatic tire, comprising:

a tread portion extending in a tire circumferential direction and having an annular shape;
a pair of sidewall portions respectively disposed on both sides of the tread portion;
a pair of bead portions each disposed on an inner side of the pair of sidewall portions in a tire radial direction;
and
a carcass layer mounted between the pair of bead portions;
a transponder being embedded in an outer side of the carcass layer in a tire width direction, a rubber member having a largest storage modulus at 20° C. of rubber members located on an outer side of the transponder in the tire width direction having a modulus M50out(20° C.) during 50% deformation at 20° C. and a modulus M50out(100° C.) during 50% deformation at 100° C. that satisfy a relationship 1.0≤M50out(20° C.)/M50out(100° C.)<2.5, and a rubber member having a largest storage modulus at 20° C. of rubber members located on an inner side of the transponder in the tire width direction having a modulus M50in(20° C.) during 50% deformation at 20° C. and a modulus M50in(100° C.) during 50% deformation at 100° C. that satisfy a relationship 1.0≤M50in(20° C.)/M50in(100° C.)<4.0.

3 more elements

A pneumatic tire, comprising:

a tread portion extending in a tire circumferential direction and having an annular shape;
a pair of sidewall portions respectively disposed on both sides of the tread portion;
a pair of bead portions each disposed on an inner side of the pair of sidewall portions in a tire radial direction;
and
a carcass layer mounted between the pair of bead portions;
a transponder being embedded in an outer side of the carcass layer in the tire width direction, and an absolute value |M50out(50° C.)−M50in(50° C.)| of a difference between a modulus M50out(50° C.) during 50% deformation at 50° C. of a rubber member having a largest storage modulus at 20° C. of rubber members located on an outer side of the transponder in the tire width direction and a modulus M50in(50° C.) during 50% deformation at 50° C. of a rubber member having a largest storage modulus at 20° C. of rubber members located on an inner side of the transponder in the tire width direction being 10 MPa or less.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/929,018Filed 12 Feb 2021
Priority: JP 2020-02428617 Feb 2020
Published: US 2023/0158841 A125 May 2023
Granted: 12 Nov 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

B60C 19/00
Tyre parts or constructions not otherwise provided for
B60C 23/0433
Characterised by the type of signal transmission means: radio signals
B60C 15/06
Tyre beads, e.g. ply turn-up or overlap: flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead
B60C 23/0408
Mounted on the wheel or tyre: transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver