Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Reexamination Certificate
2011-07-12
2011-07-12
Johnstone, Adrienne C (Department: 1747)
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
C152S375000, C152S381600
Reexamination Certificate
active
07975740
ABSTRACT:
To reduce road noise in running by disposing a noise damper made of a spongy material in a cavity of a tire, a tire and rim assembly is provided. The tire and rim assembly1including a rim2, a pneumatic tire3attached to the rim2, and a noise damper4made of a spongy material which is disposed in a tire cavity “i” surrounded by the rim2and the pneumatic tire3and extends in the tire circumferential direction, wherein the noise damper4has a volume of 0.4 to 20% of the whole volume of the tire cavity “i” and is fixed to an inner surface2ior3iof the tire or rim, the noise damper4has a height of 30 mm or less from the inner surface, and the spongy material of the noise damper4has a hardness of 10 to 250 N, a tensile strength of 70 kPa or more and a specific gravity of 0.014 to 0.052.
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Birch & Stewart Kolasch & Birch, LLP
Johnstone Adrienne C
Sumitomo Rubber Industries Ltd.
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