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US 2012/0056414 A1Published application
Exhaust system conduit with thermal/noise insulation
OwnerR. Winfield THOMAS, Robert F. STALCUP, II +1inventors
InventorsR. Winfield THOMAS, Robert F. STALCUP, II, Scott R. SWANK
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Abstract
A flexible conduit for use in a pipe system such as a vehicular exhaust system to provide a torsional or non-torsional joint between two pipes. The conduit has an outer bellows, an inner liner and at least one layer of noise/thermal insulation to attenuate noise, resist thermal transmission and dampen vibration.
Claims19
A flexible conduit structure for coupling first and second pipes, comprising:
- a conduit having first and second ends for connection with said first and second pipes, respectively;
- an outside portion of said conduit constructed in a manner to provide flexibility to said conduit;
- an inside portion of said conduit connected to said outside portion and arranged to provide a bore through said conduit for the passage of fluid therethrough, said inside portion comprising a helically wound metal strip;
- and
- a first insulation blanket sandwiched between said outside and inside portions, said first insulation blanket being constructed to suppress noise and heat transmission from within said conduit.
2 more elements
A flexible conduit structure for a vehicle exhaust system, comprising:
- a conduit having a liner forming a flow passage for flow of vehicle exhaust gases therethrough and an outer corrugation body having a plurality of corrugations to provide flexibility of said conduit;
- a pair of end fittings on opposite ends of said conduit for connection to respective pipes between which said flow passage directs vehicle exhaust gases;
- and
- a layer of insulation between said liner and said corrugated body constructed and arranged to suppress noise and heat transmission from within said conduit.
1 more element
A flexible conduit structure for coupling first and second pipes, comprising:
- first and second ends for connection with said first and second pipes, respectively;
- a liner providing a flow channel through which vehicle exhaust gases can flow, said liner comprising a metal strip arranged in a helical winding;
- an outside portion having a plurality of corrugations to accommodate flexing of said conduit, said outside portion being connected with said liner;
- a covering substantially surrounding said outside portion, said covering comprising a wire braid;
- and
- a first insulation layer.
3 more elements
Dependencies are inferred from the claim text.