The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 12, 2006
Filed:
May. 21, 2004
Timothy J. Allison, Old Fort, NC (US);
Carroll L. Owenby, Old Fort, NC (US);
Ernie Wilson, Albemarle, NC (US);
Ronnie Lash, Marion, NC (US);
Timothy J. Allison, Old Fort, NC (US);
Carroll L. Owenby, Old Fort, NC (US);
Ernie Wilson, Albemarle, NC (US);
Ronnie Lash, Marion, NC (US);
Collins & Aikman Products Co., Southfield, MI (US);
Abstract
Sound absorbing/sound blocking products, including trim products formed from a porous fibrous layer backed by a sound absorbing layer and a sound blocking layer for use within vehicles, and methods of making same, are provided. A porous fibrous layer structure including a fibrous layer backing is heated to achieve a fluid or semi-fluid state and then subjected to vacuum to draw air through the fibrous layer backing to create a porous structure. A layer of sound absorbing and a layer of sound blocking material may be applied to the porous fibrous layer backing to provide improved acoustic properties. An underlayment may further be included to provide selected areas of increased thickness and provide tailoring of sound attenuation.