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:
Apr. 23, 2013
Filed:
Apr. 24, 2012
Daniel P. Jones, Royal Oak, MI (US);
Philippe Leboeuf, St Maurice, FR;
Karl Paul Maurer, North Branch, MN (US);
Daniel P. Jones, Royal Oak, MI (US);
Philippe Leboeuf, St Maurice, FR;
Karl Paul Maurer, North Branch, MN (US);
E.I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A muffler assembly including one or more exhaust pipe(s), a polymeric housing carried by at least one of the exhaust pipe(s); a thermal insulating layer lining the housing interior surface and extending between the housing and exhaust pipe at the housing-exhaust pipe interface; wherein the thermal insulating layer includes a nonwoven fabric; wherein when the fabric is exposed to heat, the fabric increases in thickness to seal the muffler assembly at the housing-exhaust pipe interface and provides thermal insulation to the polymeric housing.