Patent US4030457A successfully refreshed from Google Patents.
US4030457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor carburetor
Assignee: Lee Raymond Organization Inc
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Filing: 1975-10-21
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Granted: 1977-06-21
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Expires: 1995-10-21
Abstract
Abstract A device for feeding vaporized gasoline into the intake of an internal combustion engine. The fuel-air line leading from the conventional engine carburetor is passed through a chamber heated by exhaust gas to the intake ducts of the engine. The fuel line from the fuel pump travels through an electrically operated valve which directs the fuel either to the carburetor, for starting the engine, or alternately in a warmed engine, to a metering valve located on the fuel-air line in the heated chamber. The fuel line from the valve to the metering device passes through an auxilliary heating chamber to vaporize the fuel prior to its passage through the metering device into the engine fuel-air line.
Inventors
- 👤 Peter Hawryluk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:25
CPC Classifications
F; F02; F02M; F02M31/00; F02M31/02; F02M31/04; F02M31/06; F02M31/08; F02M31/087; F02M31/093; F02M31/16; F02M31/18; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
255 words
A fuel feed system for an internal combustion engine which selectively heats the fuel supply line and the air supply line prior to mixture of the fuel air intake of the engine, comprising an internal combustion engine fitted with a carburetor fed by a first fuel line from a fuel pump and an air intake, joined to a fuel-air engine intake pipe, a first chamber, the interior of which is supplied by exhaust gas from said engine, with the said fuel-air intake pipe led through said first chamber to the intake duct of said engine, a second fuel line joined by a valve to the first fuel line by a remote-controlled valve which serves to channel the flow of fuel from the fuel pump alternately into said first fuel line or into said second fuel line, a second chamber, the interior of which is joined by thermostatic valve control means to the interior of the first chamber, with the said second fuel line led through said second chamber to a regulating valve joining said second fuel line to the fuel-air intake pipe at a location adjacent the outlet end of said first fuel line in said first chamber, such that air in the fuel-air intake pipe may be heated independently and at a different temperature from the fuel in the second fuel line and such that fuel in the second fuel line will be admitted into the fuel-air intake pipe through the regulating valve after both the fuel and the air have been independently heated.
Claim 2
Dependent Claim
255 words
A fuel feed system for an internal combustion engine which selectively heats the fuel supply line and the air supply line prior to mixture of the fuel air intake of the engine, comprising an internal combustion engine fitted with a carburetor fed by a first fuel line from a fuel pump and an air intake, joined to a fuel-air engine intake pipe, a first chamber, the interior of which is supplied by exhaust gas from said engine, with the said fuel-air intake pipe led through said first chamber to the intake duct of said engine, a second fuel line joined by a valve to the first fuel line by a remote-controlled valve which serves to channel the flow of fuel from the fuel pump alternately into said first fuel line or into said second fuel line, a second chamber, the interior of which is joined by thermostatic valve control means to the interior of the first chamber, with the said second fuel line led through said second chamber to a regulating valve joining said second fuel line to the fuel-air intake pipe at a location adjacent the outlet end of said first fuel line in said first chamber, such that air in the fuel-air intake pipe may be heated independently and at a different temperature from the fuel in the second fuel line and such that fuel in the second fuel line will be admitted into the fuel-air intake pipe through the regulating valve after both the fuel and the air have been independently heated.
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) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |