Patent · US Active

Soundproofing assembly, in particular for a motor vehicle

US9133615B2 · kind B2 · utility

25Cited by

11References

15Claims

0Family size

Assignee

FAURECIA AUTOMOTIVE INDUSTRIE · FR

Inventors

Lars Bischoff · Braunschweig, DE
Arnaud Duval · Bienne, CH

Key dates

Filing date	Aug 21, 2012
Grant date	Sep 15, 2015
Priority date	—
Expiry date	Aug 21, 2032

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB32B2605/08
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.