In tire sound absorber
AssigneeZephyros, Inc.
InventorsMarek Henryk Kierzkowski, Philip John Gibbons, Bruce Reginald Gascoigne, Michael William Coates
Life of this patent
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Abstract
An in-tire sound absorber for a pneumatic wheel assembly including a wheel rim and a tire fitted to the wheel rim. The sound absorber is adapted to be located within a cavity defined by the wheel rim and the tire. The sound absorber comprises a first fibrous layer and a second fibrous layer. The second fibrous layer has a higher air flow resistance than the first fibrous layer. The first fibrous layer, the second fibrous layer, or both, is made from a non-woven fibrous web.
Claims20
An in-tire sound absorber for a pneumatic wheel assembly including a wheel rim and a tire fitted to the wheel rim, the sound absorber adapted to be located within a cavity defined by the wheel rim and the tire,
- the sound absorber comprising a first fibrous layer and a second fibrous layer, the second fibrous layer having a higher airflow resistance than the first fibrous layer, wherein the first fibrous layer, the second fibrous layer, or both, is made from a non-woven fibrous web.
A sound absorbing system comprising:
- a. a tire,
- b. a wheel rim, the wheel rim and tire forming an enclosed tire cavity, and
- c. a porous insert disposed within the tire cavity comprising:
- a. a first fibrous layer comprising a vertically lapped thermally bonded nonwoven material, and
- b. a second fibrous layer comprising a thermoformable acoustic sheet,
- wherein the first fibrous layer, the second fibrous layer, or both, is made from a fibrous web of polyester fibers;
- wherein the second fibrous layer has a higher air flow resistance than the first fibrous layer.
Dependencies are inferred from the claim text.