US5036822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel supplying device for vessel propulsion unit
Assignee: Yamaha Marine Co Ltd
•
Filing: 1988-10-12
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Granted: 1991-08-06
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Expires: 2008-10-12
Abstract
Abstract A fuel supply system for an outboard motor including a combined fuel filter and fuel pump supported within the power head of the outboard motor for drawing fuel from a remotely positioned fuel tank and delivering it to the charge forming device of the outboard motor.
Inventors
- 👤 Akinori Kojima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:57
CPC Classifications
F; F02; F02M; F02M37/00; F02M37/04; F02M37/14; F02M37/22; F02M37/32; F02M37/44; F02B; F02B61/00; F02B61/04; F02B61/045; F02M37/24
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
124 words
In a fuel supplying device for an outboard motor adapted to be mounted on the transom of a watercraft hull and having an internal combustion engine, said device being comprised of a fuel tank positioned within the hull, a charge forming device for said engine and conduit means interconnecting said fuel tank with said charge forming device for the flow of fuel thereto, the improvement comprising said conduit means defining a reservoir volume formed in the power head of said outboard motor and a fuel filter therein in which a quantity of fuel may accumulate, and a fuel pump submerged in said reservoir volume of said fuel filter for pumping fuel through said conduit means from said fuel tank to said charge forming device.
Claim 2
Dependent Claim
124 words
In a fuel supplying device for an outboard motor adapted to be mounted on the transom of a watercraft hull and having an internal combustion engine, said device being comprised of a fuel tank positioned within the hull, a charge forming device for said engine and conduit means interconnecting said fuel tank with said charge forming device for the flow of fuel thereto, the improvement comprising said conduit means defining a reservoir volume formed in the power head of said outboard motor and a fuel filter therein in which a quantity of fuel may accumulate, and a fuel pump submerged in said reservoir volume of said fuel filter for pumping fuel through said conduit means from said fuel tank to said charge forming device.
Claim 3
Dependent Claim
58 words
In a fuel supply device as set forth in claim 1 wherein the fuel filter comprises a cylindrical element and is contained within a housing having a cap and a cylindrical housing portion, the fuel pump having a discharge fitting sealingly engaged with the cap for delivering fuel under pressure to an outlet passage formed in the cap.
Claim 4
Dependent Claim
86 words
A combined fuel filter and fuel pump arrangement comprised of a housing assembly defining a reservoir volume, an inlet to said reservoir volume, an outlet from said reservoir volume, a cylindrical fuel filter element supported within said housing assembly and disposed between said inlet and said outlet for filtering fuel flowing therethrough, and a fuel pump and drive motor therefore contained within the interior of said cylindrical fuel filter and in said reservoir volume for drawing fuel from said inlet and discharging it through said outlet.
Claim 5
Dependent Claim
86 words
A combined fuel filter and fuel pump arrangement comprised of a housing assembly defining a reservoir volume, an inlet to said reservoir volume, an outlet from said reservoir volume, a cylindrical fuel filter element supported within said housing assembly and disposed between said inlet and said outlet for filtering fuel flowing therethrough, and a fuel pump and drive motor therefore contained within the interior of said cylindrical fuel filter and in said reservoir volume for drawing fuel from said inlet and discharging it through said outlet.
Claim 6
Dependent Claim
52 words
A combined fuel filter and fuel pump arrangement as set forth in claim 3 wherein the housing assembly comprises a cap and a cylindrical housing portion, the fuel pump having a discharge fitting sealingly engaged with the cap for delivering fuel under pressure to the outlet which is formed in the cap.
References Cited (Backward Citations)
US1392652A
Cited
DE2724412A1
Cited
US4231719A
Cited
US4212600A
Cited
JPS55164768A
Cited
JPS5762958A
Cited
US4403578A
Cited
DE3118511A1
Cited
US4617879A
Cited
US4594970A
Cited
US4763633A
Cited
US4689025A
Cited
US4811717A
Cited
US4743171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-05 | 1995-02-04 | 1995-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-05 | 1999-02-04 | 1999-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-05 | 2003-02-04 | 2003-08-06 | $7700.00 | Window Closed / Lapsed |