Loose-fill insulation exhaust gas treatment device and methods of manufacturing

US9790836B2 · kind B2 · utility

Assignee

• Tenneco Automotive Operating Company LLC · US

Inventors

• Ruth Latham · Ann Arbor, US
• William Alcini · Ypsilanti, US
• Michael Golin · Dexter, US
• Michael Joseph Torzewski · Milan, US
• Steven Freis · Ann Arbor, US
• Mark Ernest Kluesner · Marquette, US
• Gabriel Salanta · Ann Arbor, US
• Stephen Myers · Owosso, US

Key dates

• Filing date: Nov 20, 2013
• Grant date: Oct 17, 2017
• Expiry date: Jun 10, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49398
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

An exhaust gas treatment device, which includes an outer layer, an inner layer that is at least in part disposed within the outer layer, and a loose-fill insulation disposed in the volume between the outer layer and the inner layer, where a piece of fiber mat is disposed between the outer layer and the inner layer and forms a barrier that at least partially prevents the loss of the loose-fill insulation from the volume between the outer layer and the inner layer and a manufacturing method that includes placing a loose-fill insulation into the volume of space between an inner layer and an outer layer and positioning a piece of fiber mat between the outer layer and the inner layer to form a barrier that at least partially prevents the loss of the loose-fill insulation from the volume of space between the outer and inner layers.