Noise-reduction system for vehicle tires
US5479974A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1995 |
| Grant date | Jan 2, 1996 |
| Priority date | — |
| Expiry date | Apr 10, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/1054
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.