Noise damper
AssigneeSumitomo Rubber Industries, Ltd.
InventorsNaoki YUKAWA, Hidehiko Hino
Life of this patent
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Abstract
A noise damper disposed in a tire cavity formed by a pneumatic tire and wheel rim is disclosed. A noise damper designed to use with a wheel rim comprises an annular body disposed around a damper-mounting portion of the wheel rim, and the annular body is made of a spongy material having an inside diameter of from 0.9 to 1.10 times an outside diameter of the damper-mounting portion. A noise damper designed to use with a pneumatic tire comprises an annular body disposed in a tire hollow, and the annular body is made of a spongy material having an outside diameter of from 1.00 to 1.10 times the maximum inside diameter of the tire hollow.
Claims15
A noise damper for a wheel rim on which a pneumatic tire is mounted, comprising
- an annular body disposed around a mount portion of the wheel rim,
- the annular body made of a spongy material having
- a specific gravity of from 0.005 to 0.060,
- a cross sectional area (S) of from 1 to 60 cm2,
- a radial height (H) of from 0.5 to 6.0 cm,
- a base width (W) of from 1 to 18 cm, and
- an inside diameter (RI) of from 0.9 to 1.10 times an outside diameter (RW) of said mount portion.
A noise damper for a pneumatic tire, comprising an annular body disposed in a tire hollow, wherein
- the axial width of the annular body is constant or alternatively gradually decreases from the radially outer end towards the radially inner end, and
- the annular body is made of a spongy material having
- a specific gravity of from 0.005 to 0.060,
- a cross sectional area (S) of from 1 to 60 cm2,
- a radial height (H) of from 0.5 to 6.0 cm,
- a base width (W) at the radially outer end of from 1 to 25 cm, and
- an outside diameter (RO) of from 1.00 to 1.10 times the maximum inside diameter (RT) of the tire hollow.
Dependencies are inferred from the claim text.