| 发明名称 | Soundproofing assembly, in particular for a motor vehicle | ||
| 摘要 | This assembly includes an elastic and porous base spring layer intended to be placed facing a surface, in particular of an automobile vehicle, and an intermediate insulation layer impervious to the passage of air, the intermediate layer being positioned on the base spring layer. The airproof intermediate layer has a surface mass density of less than 500 g/m2, the sound proofing assembly including a porous stiffening layer, positioned in contact with the impervious intermediate layer. The porous stiffening layer has a smaller thickness than the thickness of the base spring layer and a flexural stiffness, reduced to a unit width, of more than 0.01 N.m. | ||
| 申请公布号 | US9133615(B2) | 申请公布日期 | 2015.09.15 |
| 申请号 | US201214240002 | 申请日期 | 2012.08.21 |
| 申请人 | FAURECIA AUTOMOTIVE INDUSTRIE | 发明人 | Bischoff Lars;Duval Arnaud |
| 分类号 | F02B77/13;E04B1/84;G10K11/168;B32B27/06;B32B27/12;B32B7/02;F02B77/11;E04B1/82 | 主分类号 | F02B77/13 |
| 代理机构 | Arent Fox LLP | 代理人 | Arent Fox LLP |
| 主权项 | 1. A sound proofing assembly, comprising: an elastic and porous base spring layer, configured to be placed facing a surface; an intermediate insulation layer impervious to the passage of air, the intermediate layer being positioned on the base spring layer; the impervious intermediate layer having a surface mass density of less than 500 g/m2, the sound proofing assembly including a porous stiffening layer positioned in contact with the impervious intermediate layer, the porous stiffening layer having a smaller thickness than the thickness of the base spring layer and a flexural stiffness, reduced to a unit width, of greater than 3.0 N.m. | ||
| 地址 | Nanterre FR | ||