Patent US987678A successfully refreshed from Google Patents.
Patent US4437448A successfully refreshed from Google Patents.
US4437448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual fuel supply system
Assignee: Outboard Marine Corp
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Filing: 1982-12-20
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Granted: 1984-03-20
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Expires: 2002-12-20
Abstract
Abstract Disclosed herein is a fuel supply system comprising a carburetor including an air/fuel induction passage including a main supply jet and a secondary orifice, a first float bowl having an auxiliary outlet and communicating with the main jet, and a first float controlled valve communicable with a source of a first fuel and operable to control supply of the first fuel to the first float bowl, a combined auxiliary float bowl and primer comprising a housing including a second float bowl, a cavity, a duct extending between the cavity and the second float bowl, a second float controlled valve communicable with a source of a second fuel and operable to control supply of the second fuel to the second float bowl, a movable wall located in the cavity and defining a primer fuel chamber which can be varied in volume and which communicates with the duct, a handle connected to the movable wall for displacing the movable wall to vary the volume of the primer fuel chamber, a check valve in the duct permitting flow from the second float bowl and preventing return flow to the second float bowl, and an outlet communicating with the duct between the primer fuel chamber and the check valve, and a control valve connected to the secondary orifice, to the auxiliary outlet of the first float bowl, and to the outlet of the combined auxiliary float bowl and primer and including a valve member movable between a first position communicating the secondary orifice with the outlet and disconnecting the secondary orifice from the auxiliary outlet and a second position communicating the secondary orifice with the auxiliary outlet and disconnecting the secondary orifice from the outlet.
Inventors
- 👤 Henry C. Billingsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:25
CPC Classifications
F; F02; F02M; F02M13/00; F02M13/06; F02M1/00; F02M1/16; Y; Y10; Y10S; Y10S261/00; Y10S261/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
163 words
A fuel supply system comprising a carburetor including an air/fuel induction passage including a main supply jet and a secondary orifice, a first fuel supply including an auxiliary outlet, communicating with said main jet, communicable with a source of a first fuel, and operable to supply the first fuel to said main jet and to said auxiliary outlet, a second fuel supply communicable with a source of a second fuel, and including an outlet, and a control valve including a valve chamber which is closed to the atmosphere and which is connected to said secondary orifice, to said auxiliary outlet of said first fuel supply, and to said outlet of said second fuel supply, said control valve also including a valve member movable between a first position communicating said secondary orifice with said outlet and disconnecting said secondary orifice from said auxiliary outlet and a second position communicating said secondary orifice with said auxiliary outlet and disconnecting said secondary orifice from said outlet.
Claim 2
Dependent Claim
163 words
A fuel supply system comprising a carburetor including an air/fuel induction passage including a main supply jet and a secondary orifice, a first fuel supply including an auxiliary outlet, communicating with said main jet, communicable with a source of a first fuel, and operable to supply the first fuel to said main jet and to said auxiliary outlet, a second fuel supply communicable with a source of a second fuel, and including an outlet, and a control valve including a valve chamber which is closed to the atmosphere and which is connected to said secondary orifice, to said auxiliary outlet of said first fuel supply, and to said outlet of said second fuel supply, said control valve also including a valve member movable between a first position communicating said secondary orifice with said outlet and disconnecting said secondary orifice from said auxiliary outlet and a second position communicating said secondary orifice with said auxiliary outlet and disconnecting said secondary orifice from said outlet.
Claim 3
Dependent Claim
99 words
A fuel supply system in accordance with claim 1 wherein said first fuel supply includes a first float bowl including said auxiliary outlet and communicating with said main jet, and a first float controlled valve communicable with the source of the first fuel and operable to control supply of the first fuel to said first float bowl, and wherein said a second fuel supply includes a second float bowl including said outlet, and second float controlled valve communicable with the source of the second fuel and operable to control supply of the second fuel to said second float bowl.
Claim 4
Dependent Claim
47 words
A fuel supply system in accordance with claim 2 and further including a first fuel supply disconnect fitting communicating with said first valve, and a second fuel supply disconnect fitting communicating with said second valve, said first and second fuel supply disconnect fittings being of identical construction.
Claim 5
Dependent Claim
170 words
A fuel supply system comprising a carburetor including an air/fuel induction passage including a main supply jet and a secondary orifice, means for supplying a first fuel to said main jet, and a combined auxiliary float bowl and primer comprising a housing including a float bowl, a cavity, and a duct extending between said cavity and said a float bowl, float controlled valve communicable with a source of a second fuel and operable to control supply of the second fuel to said float bowl, a movable wall located in said cavity and defining a primer fuel chamber which can be varied in volume and which communicates with said duct, means connected to said movable wall for displacing said movable wall to vary the volume of said primer fuel chamber, a check valve in said duct permitting flow from said float bowl and preventing return flow to said float bowl, and an outlet communicating with said duct between said primer fuel chamber and said check valve, and with said secondary orifice.
Claim 6
Dependent Claim
170 words
A fuel supply system comprising a carburetor including an air/fuel induction passage including a main supply jet and a secondary orifice, means for supplying a first fuel to said main jet, and a combined auxiliary float bowl and primer comprising a housing including a float bowl, a cavity, and a duct extending between said cavity and said a float bowl, float controlled valve communicable with a source of a second fuel and operable to control supply of the second fuel to said float bowl, a movable wall located in said cavity and defining a primer fuel chamber which can be varied in volume and which communicates with said duct, means connected to said movable wall for displacing said movable wall to vary the volume of said primer fuel chamber, a check valve in said duct permitting flow from said float bowl and preventing return flow to said float bowl, and an outlet communicating with said duct between said primer fuel chamber and said check valve, and with said secondary orifice.
Claim 7
Dependent Claim
277 words
A fuel supply system comprising a carburetor including an air/fuel induction passage including a main supply jet and a secondary orifice, a first float bowl having an auxiliary outlet and communicating with said main jet, a first float controlled valve communicable with a source of a first fuel and operable to control supply of the first fuel to said first float bowl, a combined auxiliary float bowl and primer comprising a housing including a second float bowl, a cavity, and a duct extending between said cavity and said a second float bowl, second float controlled valve communicable with a source of a second fuel and operable to control supply of the second fuel to said second float bowl, a movable wall located in said cavity and defining a primer fuel chamber which can be varied in volume and which communicates with said duct, means connected to said movable wall for displacing said movable wall to vary the volume of said primer fuel chamber, a check valve in said duct permitting flow from said second float bowl and preventing return flow to said second float bowl, and an outlet communicating with said duct between said primer fuel chamber and said check valve, and a control valve connected to said secondary orifice, to said auxiliary outlet of said first float bowl, and to said outlet of said combined auxiliary float bowl and primer and including a valve member movable between a first position communicating said secondary orifice with said outlet and disconnecting said secondary orifice from said auxiliary outlet and a second position communicating said secondary orifice with said auxiliary outlet and disconnecting said secondary orifice from said outlet.
Claim 8
Dependent Claim
277 words
A fuel supply system comprising a carburetor including an air/fuel induction passage including a main supply jet and a secondary orifice, a first float bowl having an auxiliary outlet and communicating with said main jet, a first float controlled valve communicable with a source of a first fuel and operable to control supply of the first fuel to said first float bowl, a combined auxiliary float bowl and primer comprising a housing including a second float bowl, a cavity, and a duct extending between said cavity and said a second float bowl, second float controlled valve communicable with a source of a second fuel and operable to control supply of the second fuel to said second float bowl, a movable wall located in said cavity and defining a primer fuel chamber which can be varied in volume and which communicates with said duct, means connected to said movable wall for displacing said movable wall to vary the volume of said primer fuel chamber, a check valve in said duct permitting flow from said second float bowl and preventing return flow to said second float bowl, and an outlet communicating with said duct between said primer fuel chamber and said check valve, and a control valve connected to said secondary orifice, to said auxiliary outlet of said first float bowl, and to said outlet of said combined auxiliary float bowl and primer and including a valve member movable between a first position communicating said secondary orifice with said outlet and disconnecting said secondary orifice from said auxiliary outlet and a second position communicating said secondary orifice with said auxiliary outlet and disconnecting said secondary orifice from said outlet.
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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) | 1987-03-20 | 1987-09-19 | 1988-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-20 | 1991-09-19 | 1992-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-20 | 1995-09-19 | 1996-03-20 | $7700.00 | Window Closed / Lapsed |