US4848294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carburetor heating device for small snowmobile
Assignee: Yamaha Motor Co Ltd
•
Filing: 1988-02-19
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Granted: 1989-07-18
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Expires: 2008-02-19
Abstract
Abstract A carburetor heating device for a small snowmobile having a belt type transmission. The transmission is provided with a cooling system for circulating cooling air across the belt and the heated cooling air is then discharged in proximity to the engine induction system for heating it.
Inventors
- 👤 Masanobu Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:11
CPC Classifications
F; F01; F01P; F01P1/00; F01P1/06; F02; F02M; F02M15/00; F02M15/02; F02M31/00; F02M31/02; F02M31/04; F02M31/042; F02M31/14; F02M31/145; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
85 words
An arrangement for heating the induction system of a vehicle comprised of an internal combustion engine having an induction system, a heating jacket surrounding only a portion of said induction system, transmission means driven by said engine for driving a component of the vehicle, cooling means for cooling said transmission means, and means for transferring at least a portion of the heat extracted form said transmission means by said cooling means to said induction system heating jacket for heating the intake charge of the engine.
Claim 2
Dependent Claim
85 words
An arrangement for heating the induction system of a vehicle comprised of an internal combustion engine having an induction system, a heating jacket surrounding only a portion of said induction system, transmission means driven by said engine for driving a component of the vehicle, cooling means for cooling said transmission means, and means for transferring at least a portion of the heat extracted form said transmission means by said cooling means to said induction system heating jacket for heating the intake charge of the engine.
Claim 3
Dependent Claim
15 words
An arrangement as set forth in claim 1 wherein the transmission means drives the vehicle.
Claim 4
Dependent Claim
17 words
An arrangement as set forth in claim 2 wherein the transmission means comprises a belt type transmission.
Claim 5
Dependent Claim
91 words
An arrangement for heating the induction system of a vehicle comprised of an internal combustion engine having an induction system, a belt type transmission means driven by said engine for driving said vehicle, cooling means for cooling said transmission means comprising a cooling shroud surrounding said transmission belt and fan means driven by the transmission for cooling the transmission, and means for transferring at least a portion of the heat extracted from said transmission means by said cooling means to said induction system for heating the intake charge of the engine.
Claim 6
Dependent Claim
91 words
An arrangement for heating the induction system of a vehicle comprised of an internal combustion engine having an induction system, a belt type transmission means driven by said engine for driving said vehicle, cooling means for cooling said transmission means comprising a cooling shroud surrounding said transmission belt and fan means driven by the transmission for cooling the transmission, and means for transferring at least a portion of the heat extracted from said transmission means by said cooling means to said induction system for heating the intake charge of the engine.
Claim 7
Dependent Claim
45 words
An arrangement as set forth in claim 4 wherein the means for transferring a portion of the heat extracted from the transmission means to the induction system comprises means for conveying the cooling air discharged from the cooling shroud into proximity with the induction system.
Claim 8
Dependent Claim
30 words
An arrangement as set forth in claim 3 wherein the cooling means comprises a cooling shroud surrounding the belt and fan means driven by the transmission for cooling the transmission.
Claim 9
Dependent Claim
45 words
An arrangement as set forth in claim 6 wherein the means for transferring a portion of the heat extracted from the transmission means to the induction system comprises means for conveying the cooling air discharged from the cooling shroud into the induction system heating jacket.
Claim 10
Dependent Claim
18 words
An arrangement as set forth in claim 1 wherein the vehicle comprises a snowmobile having a belt drive.
Claim 11
Dependent Claim
15 words
An arrangement as set forth in claim 8 wherein the transmission means drives the vehicle.
Claim 12
Dependent Claim
17 words
An arrangement as set forth in claim 9 wherein the transmission means comprises a belt type transmission.
Claim 13
Dependent Claim
30 words
An arrangement as set forth in claim 10 wherein the cooling means comprises a cooling shroud surrounding the belt and fan means driven by the transmission for cooling the transmission.
Claim 14
Dependent Claim
45 words
An arrangement as set forth in claim 11 wherein the means for transferring a portion of the heat extracted from the transmission means to the induction system comprises means for conveying the cooling air discharged from the cooling shroud into the induction system heating jacket.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-17 | 1993-01-16 | 1993-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-17 | 1997-01-16 | 1997-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-17 | 2001-01-16 | 2001-07-18 | $7700.00 | Window Closed / Lapsed |