Back to results
US 5,708,238 AGranted
Exhaust silencing device
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsKosuke Asao, Kazuhiro Yasuda, Masashi Koyanagi, Osamu Sato
Life of this patent
Estimating the term…
Abstract
In an exhaust silencing device having inner tubes which are connected to an exhaust pipe connected to an engine and provided with a plurality of through holes, and an outer tube which covers the inner tubes. The occurrence of a whistling sound is prevented while avoiding the use of a sound absorbing material. Recesses are provided on the inner surface of the inner tube, which, together with the outer tube, form an annular expansion chamber.
Claims18
An exhaust silencing device comprising:
- an inner tube operatively connected to an exhaust pipe adapted to be connected to an engine, said inner tube having a sidewall with a plurality of through holes passing therethrough which allow exhaust gasses to pass therethrough;
- a cover for covering a plurality of said through holes to prevent exhaust gasses from passing therethrough;
- and
- an outer tube surrounding a portion of said inner tube,
- said inner tube and said outer tube together forming an annular expansion chamber therebetween.
2 more elements
An exhaust silencing device comprising:
- a casing defining a chamber disposed therein;
- at least one inner conduit mounted within said casing with an upstream end of said at least one inner conduit passing through an endwall of said casing and a downstream end being disposed within said casing, the inner conduit having a sidewall with a plurality of through holes passing therethrough which allow exhaust gasses to pass therethrough;
- a cover for covering a plurality of said through holes to prevent exhaust gasses from passing therethrough;
- and
- an outer conduit surrounding a portion of said inner conduit,
- said inner conduit and said outer conduit together forming an annular expansion chamber therebetween.
3 more elements
An exhaust silencing device comprising:
- an inner tube operatively connected to an exhaust pipe adapted to be connected to an engine, said inner tube having a sidewall with a plurality of through-holes passing therethrough;
- a cover tube surrounding a portion of said inner tube for closing off a plurality of said through-holes in said inner tube to thereby form a plurality of recesses on an inner surface of said sidewall;
- and
- an outer tube surrounding said cover tube and a portion of said inner tube, said inner tube and said outer tube together forming an annular expansion chamber therebetween.
1 more element
Dependencies are inferred from the claim text.