Patent US4319657A successfully refreshed from Google Patents.
US4319657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air intake conduitry for a motorcycle
Assignee: Yamaha Motor Co Ltd
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Filing: 1979-09-25
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Granted: 1982-03-16
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Expires: 1999-09-25
Abstract
Abstract A motorcycle includes a frame that mounts an engine and a fuel tank. The fuel tank is mounted above the engine. Air intake conduitry includes an upwardly extending intake pipe, an upwardly extending connecting pipe, and a connecting box immediately beneath the fuel tank, atop the intake and connecting pipers, which serves to connect them so as to provide an air intake conduit from the atmosphere to the engine. In a V-type engine, the pipes and box are disposed in the angle between the cylinders. In multi-bank engines, which utilize a pair of intake pipes, the connecting pipe, and also an air cleaner, can be disposed between them. When the fuel tank includes a pair of draped sides to form a saddle-like tank, the connecting box can be disposed between the draped sides.
Inventors
- 👤 Kazuhiko Nomura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:59
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/10; F02M35/10006; F02M35/10026; F02M35/10039; B; B62; B62K; B62K11/00; F02B; F02B61/00; F02B61/02; F02M35/10091; F02M35/10098; F02M35/104; F02M35/116; F02M35/12; F02M35/1205; F02M35/1233; F02M35/16; F02M35/162; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027; F02B61/06; F02B75/16; F02B75/18; F02B75/22; F02M35/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
118 words
In combination: a motorcycle frame; a multi-bank, multi-cylinder V-type engine supported by said frame; a fuel tank supported by said frame, said fuel tank being disposed above said engine and being generally V-shaped, with legs depending downwardly at each side; and air intake conduitry comprising a respective air intake pipe extending upwardly from each bank of said engine, a connecting pipe extending substantially vertically adjacent to and between said intake pipes, and a connecting box disposed immediately beneath said fuel tank between said legs thereof, the upper ends of said air intake pipes also being disposed between said legs of said fuel tank, said connecting box interconnecting said upper ends of said intake pipes and said connecting pipe.
Claim 2
Dependent Claim
118 words
In combination: a motorcycle frame; a multi-bank, multi-cylinder V-type engine supported by said frame; a fuel tank supported by said frame, said fuel tank being disposed above said engine and being generally V-shaped, with legs depending downwardly at each side; and air intake conduitry comprising a respective air intake pipe extending upwardly from each bank of said engine, a connecting pipe extending substantially vertically adjacent to and between said intake pipes, and a connecting box disposed immediately beneath said fuel tank between said legs thereof, the upper ends of said air intake pipes also being disposed between said legs of said fuel tank, said connecting box interconnecting said upper ends of said intake pipes and said connecting pipe.
Claim 3
Dependent Claim
27 words
A combination according to claim 1 in which an air cleaner is disposed between said intake pipes and connected to the lower end of said connecting pipe.
Claim 4
Dependent Claim
23 words
A combination according to claim 2 in which the interior of said connecting box is so proportioned as to constitute an intake silencer.
Claim 5
Dependent Claim
18 words
A combination according to claim 1 in which there is a said intake pipe for each said cylinder.
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) | 1985-03-15 | 1985-09-14 | 1986-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-15 | 1989-09-14 | 1990-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-15 | 1993-09-14 | 1994-03-16 | $7700.00 | Window Closed / Lapsed |