US 6,726,289 B2 · Tire noise reducing system

Abstract

A tire noise reducing system comprises a pneumatic tire, a wheel rim and a noise damper disposed in a cavity formed between the rim and tire when mounted as being surrounded by the tire and rim, the noise damper is made of a porous material having a specific gravity of from 0.005 to 0.06 and secured on a surface facing the cavity, the volume S2 of the noise damper is in a range of from 0.4 to 20.0% of the volume S1 of the cavity. Preferably, the noise damper is provided with an uneven surface or an outer layer for less sound reflection, and the shape index E of the noise damper is more than 1, and the ratio T/W of the thickness T to the width W of the damper is not less than 1.

Claims14

Dependent claims

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,
the noise damper being made of a porous material having a specific gravity of from 0.005 to 0.06 and secured on the inner surface of the tire, facing the interior of the cavity,
the volume S2 of the noise damper being in a range of from 0.4 to 20.0% of the volume S1 of the cavity.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

10/122,326Filed 16 Apr 2002

Priority

JP 2001-11711616 Apr 2001

Published

US 2003/0020320 A130 Jan 2003

Granted

27 Apr 2004

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

B60C 19/002
Tyre parts or constructions not otherwise provided for: noise damping elements provided in the tyre structure or attached thereto, e.g. in the…
B60B 3/04
Disc wheels, i.e. wheels with load-supporting disc body: with a single disc body not integral with rim , i.e. disc body and rim being manufactured…
B60B 21/12
Rims: appurtenances, e.g. lining bands
B60C 5/002
Inflatable pneumatic tyres or inner tubes: filled at least partially with foam material

Tire noise reducing system

Life of this patent

Tire noise reducing system

Life of this patent

Abstract

Claims14