Patent · US Active

Muffler assembly and process of manufacture

US8424636B2 · kind B2 · utility

9Cited by

11References

12Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Daniel P. Jones · Pinellas Park, US
Philippe Leboeuf · Paris, FR
Karl Paul Maurer · North Branch, US

Key dates

Filing date	Apr 24, 2012
Grant date	Apr 23, 2013
Priority date	—
Expiry date	Apr 24, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49398
WIPO fieldEnvironmental technology
WIPO sectorChemistry

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.

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