Sound absorptive protective mat

US6983822B2 · kind B2 · utility

Assignee

• Rieter Technologies AG · CH

Inventors

• Desmond O'Regan · Bad Homburg vor der Höhe, DE
• James H. Fisher · Kendallville, US
• Hameed Khan · Crown Point, US
• Burton J. Price · Bloomsburg, US

Key dates

• Filing date: May 21, 2002
• Grant date: Jan 10, 2006
• Expiry date: May 21, 2022

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B32B2471/04
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The present invention concerns an automotive protective mat (1), also known as throw in mat or protective mat. This mat comprises a microporous stiffening layer (2) (acoustical membrane). This layer may be composed of several sheets. The overall air flow resistance is between 500 Ns/m3–4000 Ns/m3. It is essential for this mat (1) that it is hydrophobic. In order to achieve an enhanced acoustical effectiveness a decoupling layer (6) is foreseen between the microporous stiffening layer (2) and the vehicle floor (8). This decoupling layer might be incorporated in the mat (1) or constituted by the underlaying carpet or sound absorber of the vehicle floor. Further layers or sheets such as adhesive layers, non skid layers, face fabrics or carpets and/or loft layers can be added to the claimed mat.