Noise-reduction system for vehicle tires

Details Noise-reduction system for vehicle tires Noise-reduction system for vehicle tires

B - Operations, Transporting

60

C

B60C 5/12 (2006.01) B60C 19/00 (2006.01)

Patent

CA 2161741

A noise-reduction system for a vehicle wheel assembly which is comprised of a usual rim and a tubeless pneumatic tire having a pair of sidewalls and bead areas mounted thereon. A plurality of flexible, non-self- supporting pieces of cloth or other sheet material are attached to the rim or are attached to the bead areas and extend therebetween, preferably at equally spaced intervals, and form baffles within the annular air chamber of the wheel assembly to reduce noise by changing the characteristics of the sound waves created within the wheel assembly. When the wheel assembly is stationary, the baffles collapse on the rim, and when the wheel assembly is rotating, the baffles move outwardly by centrifugal force and substantially conform to the transverse cross section of the air chamber to obstruct the movement of acoustic waves traveling with the chamber to reduce tire noise.

Réducteur de bruit pour roues de véhicules comprenant une jante conventionnelle et un pneumatique sans chambre à air ayant deux flancs et des talons montés sur ces derniers. De nombreuses pièces flexibles et non autoportantes de tissu ou d'autre matériau en feuille sont fixées à la jante ou aux talons et se prolongent, de préférence, à des intervalles égaux. Ces pièces de tissu forment des cloisons à l'intérieur de la chambre à air annulaire afin de réduire le bruit en changeant les caractéristiques des ondes acoustiques créées à l'intérieur de la roue. Lorsque la roue est stationnaire, les cloisons s'affaissent sur la jante, et lorsque la roue tourne, les cloisons se déplacent vers l'extérieur grâce à la force centrifuge et épousent essentiellement la coupe transversale de la chambre à air de façon à gêner le déplacement des ondes acoustiques accompagnant la chambre afin de réduire le bruit engendré par le pneumatique.

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