US3949829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust silencer for motorcycle
Assignee: Honda Motor Co Ltd
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Filing: 1974-12-18
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Granted: 1976-04-13
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Expires: 1994-12-18
Abstract
Abstract An exhaust silencer, or muffler, for a motorcycle, wherein a pair of exhaust silencer tubes extending along the lengthwise direction of the body of the motorcycle are communicatively connected at their one end with both ends of a connecting tube extending in the breadthwise direction of the motorcycle body to increase the engine output and improve the silencing effect.
Inventors
- 👤 Soichiro Honda
- 👤 Minoru Morioka
- 👤 Takeshi Tukahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:54
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/04; B; B62; B62K; B62K11/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
122 words
An improved exhaust structure for a motorcycle which comprises: a. a pair of exhaust silencer tubes securely mounted on both sides of a body of the motorcycle in the lengthwise direction thereof; b. a connecting tube of a length lying breadthwise in a dead space between a rear part of said motorcycle body and a rear wheel in an intersecting manner, said pair of exhaust silencer tubes and said connecting tube being integrally and communicatively connected in substantially U-shaped structure to provide an increased space for said exhaust silencer without constituting any part of the motorcycle body; and c. at least a pair of exhaust pipes extending from a motorcycle engine into said exhaust silencer tubes and along the lengthwise direction thereof.
Claim 2
Dependent Claim
122 words
An improved exhaust structure for a motorcycle which comprises: a. a pair of exhaust silencer tubes securely mounted on both sides of a body of the motorcycle in the lengthwise direction thereof; b. a connecting tube of a length lying breadthwise in a dead space between a rear part of said motorcycle body and a rear wheel in an intersecting manner, said pair of exhaust silencer tubes and said connecting tube being integrally and communicatively connected in substantially U-shaped structure to provide an increased space for said exhaust silencer without constituting any part of the motorcycle body; and c. at least a pair of exhaust pipes extending from a motorcycle engine into said exhaust silencer tubes and along the lengthwise direction thereof.
Claim 3
Dependent Claim
25 words
The improved exhaust structure for the motorcycle as claimed in claim 1, wherein said pair of exhaust pipes cross each other within said connecting tube.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |