A muffler for a motorcycle, the muffler including an outer tube and an inner tube disposed substantially within the outer tube. The inner tube includes a first end adapted to receive the exhaust gases from the engine, a second end opposite the first end adapted to release the exhaust gases to the en
A muffler for a motorcycle, the muffler including an outer tube and an inner tube disposed substantially within the outer tube. The inner tube includes a first end adapted to receive the exhaust gases from the engine, a second end opposite the first end adapted to release the exhaust gases to the environment, and first and second apertures positioned between the ends. The muffler also includes a mesh tube disposed between the outer tube and the inner tube. The mesh tube defines a chamber between the inner tube and the mesh tube such that the exhaust gases exit the inner tube through the first aperture into the chamber, and exit the chamber into the inner tube through the second aperture. The muffler also includes a noise attenuating material disposed between the mesh tube and the outer tube.
대표청구항▼
What is claimed is: 1. A muffler for a motorcycle having an engine producing exhaust gases, the muffler comprising: an outer tube; an inner tube disposed substantially within the outer tube, the inner tube including a first end adapted to receive the exhaust gases from the engine and a second end o
What is claimed is: 1. A muffler for a motorcycle having an engine producing exhaust gases, the muffler comprising: an outer tube; an inner tube disposed substantially within the outer tube, the inner tube including a first end adapted to receive the exhaust gases from the engine and a second end opposite the first end adapted to release the exhaust gases to the environment, the inner tube including first and second apertures positioned between the ends; an intermediate tube disposed between the outer tube and the inner tube and defining a chamber between the intermediate tube and the inner tube such that the exhaust gases exit the inner tube through the first aperture into the chamber, and exit the chamber into the inner tube through the second aperture; a first layer of a noise attenuating material disposed between the intermediate tube and the outer tube; and a second layer of a noise attenuating material disposed between the intermediate tube and the outer tube. 2. The muffler of claim 1, wherein the first layer of noise attenuating material is single-strand fiberglass roving. 3. The muffler of claim 1, wherein the inner tube is pierced, crimped, and sealed to define the first aperture. 4. The muffler of claim 2, wherein the second layer of noise attenuating material is fiberglass mat and is disposed radially outward of the first layer of noise attenuating material. 5. The muffler of any one of claim 1, claim 2, and claim 4, wherein the first and second layers of noise attenuating material substantially fill the volume between the intermediate tube and the outer tube. 6. The muffler of any one of claim 1, claim 2, and claim 4, wherein the first layer of noise attenuating material substantially fills a portion of the volume between the intermediate tube and the outer tube, and the second layer of noise attenuating material fills only a portion of the remaining volume between the first layer of noise attenuating material and the outer tube. 7. A muffler for a motorcycle having an engine producing exhaust gases, the muffler comprising: an outer tube; an inner tube disposed substantially within the outer tube, the inner tube including a first end adapted to receive the exhaust gases from the engine and a second end opposite the first end adapted to release the exhaust gases to the environment, the inner tube including first and second apertures positioned between the ends; an intermediate tube disposed between the outer tube and the inner tube and defining a chamber between the intermediate tube and the inner tube such that the exhaust gases exit the inner tube through the first aperture into the chamber, and exit the chamber into the inner tube through the second aperture; and single-strand fiberglass roving disposed between the intermediate tube and the outer tube. 8. The muffler of claim 7, wherein the intermediate tube is mesh. 9. The muffler of claim 7, wherein the single-strand fiberglass roving substantially fills the volume between the intermediate tube and the outer tube. 10. The muffler of claim 7, wherein the single-strand fiberglass roving substantially fills a portion of the volume between the intermediate tube and the outer tube. 11. The muffler of claim 10, wherein fiberglass mat substantially fills the remaining volume between the intermediate tube and the outer tube. 12. The muffler of claim 7, wherein the inner tube is pierced, crimped, and sealed to define the first aperture. 13. A muffler for a motorcycle having an engine producing exhaust gases, the muffler comprising: an outer tube; an inner tube disposed substantially within the outer tube, the inner tube including a first end adapted to receive the exhaust gases from the engine and a second end opposite the first end adapted to release the exhaust gases to the environment, the inner tube including first and second apertures positioned between the ends; an intermediate tube disposed between the outer tube and the inner tube and defining a chamber between the intermediate tube and the inner tube such that the exhaust gases exit the inner tube through the first aperture into the chamber, and exit the chamber into the inner tube through the second aperture; single-strand fiberglass roving disposed between the intermediate tube and the outer tube; and fiberglass mat disposed between the intermediate tube and the outer tube. 14. The muffler of claim 13, wherein the intermediate tube is mesh. 15. The muffler of claim 13, wherein the single-strand fiberglass roving substantially fills a portion of the volume between the intermediate tube and the outer tube, and wherein the fiberglass mat substantially fills the remaining volume between the intermediate tube and the outer tube. 16. The muffler of claim 13, wherein the inner tube is pierced, crimped, and sealed to define the first aperture.
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