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US 7,182,114 B2Granted
Tire noise reducing system
AssigneeSumitomo Rubber Industries, Ltd.
InventorNaoki Yukawa
Life of this patent
Estimating the term…
Abstract
The present invention relates to a tire noise reducing system comprising a pneumatic tire, a wheel rim on which the pneumatic tire is mounted, and a noise damper disposed in a cavity surrounded by an inner surface of the rim and an inner surface of the tire mounted thereon, wherein the noise damper has a volume V2 which is from 0.4 to 20% of the volume V1 of the cavity, and the noise damper is made of a porous material having a hardness of from 10 to 80 N, a tensile strength of not less than 70 kPa and a specific gravity of from 0.014 to 0.026.
Claims10
A pneumatic tire comprising:
- a tread portion,
- a pair of bead portions,
- a pair of sidewall portions extending between the tread portion and the bead portions, and
- a noise damper fixed to an inner surface of the tread portion, wherein
- the noise damper is made of porous material having a hardness of from 10 to 80 N, a tensile strength of not less than 70 kPa and a specific gravity of from 0.014 to 0.026,
- the noise damper extends in a circumferential direction of the tire, and
- a tapered portion is formed on at least one of ends of the noise damper in the circumferential direction of the tire.
4 more elements
Dependencies are inferred from the claim text.