Rim wheel, and tire-rim assembly
US7152643B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2002 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Nov 5, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C19/002
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A purpose of the present invention is to provide a rim wheel and a tire rim assembly which are capable of effectively reducing cavity resonance of a tire, and accordingly, enhancing quietness and riding comfort. A plurality of cap members 20 is arranged on an outer circumferential surface of a rim 16 in a circumferential direction thereof, diaphragms are disposed inwardly of each cap member 20, and a plurality of sub-air chambers 32 is formed between the rim 16 and the cap members 20 in a rim circumferential direction. The tire main air chamber 18 is connected to the sub-air chambers 32 through communicating holes 24 formed on the cap members 20. The sub-air chambers 32 and the communicating holes 24 constitute a Helmholtz resonance noise absorber that can absorb vibration with specified frequencies. Further, since the sub-air chamber 32 is not formed in a continuous annular shape in a tire circumferential direction, occurrence of cavity resonance can be suppressed and a substantial reduction in noise can be secured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.