US4031874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carburetor
Assignee: Individual
•
Filing: 1975-10-08
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Granted: 1977-06-28
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Expires: 1995-10-08
Abstract
Abstract A carburetor for an internal combustion engine includes a body having a series of interior baffle plates through which liquid fuel and air are drawn to vaporize the fuel and form a gaseous fuel mixture. The mixture is drawn into a fuel mixture tube leading upward from the bottom of the series of baffle plates. Excess fuel is collected in the bottom of the carburetor body and pumped back to the fuel tank.
Inventors
- 👤 John E. Alwine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:40
CPC Classifications
F; F02; F02M; F02M33/00; F02M33/02; F02M33/08; F02M17/00; F02M17/18; F02M17/26; F02M29/00; F02M29/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
205 words
A carburetor for supplying a fuel mixture to an internal combustion engine including a closed hollow body, a series of closely perforated baffle plates extending between the side walls of the body and spaced apart between the top and bottom of the body, an air inlet opening in the body above the uppermost baffle plate, a fuel mixture pipe extending into the body through the top of the body, down through a number of baffle plates to an inlet opening located below a number of baffle plates, the portion of the baffle plate immediately above the inlet opening being imperforate adjacent the pipe to prevent excess liquid fuel from being drawn through such plate immediately adjacent the inlet opening, a fuel supply for distributing liquid fuel over the uppermost of said baffle plates so that when the engine is in operation liquid fuel and air are drawn down through the perforations in the baffle plates and the fuel is evaporated to form a gaseous fuel mixture subsequently drawn into the fuel mixture pipe through said inlet openings, the bottom of the body forming a sump for collection of excess liquid fuel and a return fuel system for flowing such liquid fuel away from the carburetor.
Claim 2
Dependent Claim
205 words
A carburetor for supplying a fuel mixture to an internal combustion engine including a closed hollow body, a series of closely perforated baffle plates extending between the side walls of the body and spaced apart between the top and bottom of the body, an air inlet opening in the body above the uppermost baffle plate, a fuel mixture pipe extending into the body through the top of the body, down through a number of baffle plates to an inlet opening located below a number of baffle plates, the portion of the baffle plate immediately above the inlet opening being imperforate adjacent the pipe to prevent excess liquid fuel from being drawn through such plate immediately adjacent the inlet opening, a fuel supply for distributing liquid fuel over the uppermost of said baffle plates so that when the engine is in operation liquid fuel and air are drawn down through the perforations in the baffle plates and the fuel is evaporated to form a gaseous fuel mixture subsequently drawn into the fuel mixture pipe through said inlet openings, the bottom of the body forming a sump for collection of excess liquid fuel and a return fuel system for flowing such liquid fuel away from the carburetor.
Claim 3
Dependent Claim
170 words
A carburetor for supplying a fuel mixture to an internal combustion engine including a closed hollow body, a series of closely perforated baffle plates extending between the side walls of the body and spaced apart between the top and bottom of the body, an air inlet opening in the body above the uppermost baffle plate, a fuel mixture pipe extending into the body and having an inlet opening located below a number of said baffle plates and between the two bottom most baffle plates a fuel supply for distributing liquid fuel over the uppermost of said baffle plates so that when the engine is in operation liquid fuel and air are drawn down through the perforations in the baffle plates and the fuel is evaporated to form a gaseous fuel mixture subsequently drawn into the fuel mixture pipe through said inlet openings, the bottom of the body forming a sump for collection of excess liquid fuel and a return fuel system for flowing such liquid fuel away from the carburetor.
Claim 4
Dependent Claim
170 words
A carburetor for supplying a fuel mixture to an internal combustion engine including a closed hollow body, a series of closely perforated baffle plates extending between the side walls of the body and spaced apart between the top and bottom of the body, an air inlet opening in the body above the uppermost baffle plate, a fuel mixture pipe extending into the body and having an inlet opening located below a number of said baffle plates and between the two bottom most baffle plates a fuel supply for distributing liquid fuel over the uppermost of said baffle plates so that when the engine is in operation liquid fuel and air are drawn down through the perforations in the baffle plates and the fuel is evaporated to form a gaseous fuel mixture subsequently drawn into the fuel mixture pipe through said inlet openings, the bottom of the body forming a sump for collection of excess liquid fuel and a return fuel system for flowing such liquid fuel away from the carburetor.
Claim 5
Dependent Claim
25 words
A carburetor as in claim 2 wherein the portion of the baffle plate immediately above the inlet opening adjacent the fuel mixture pipe is imperforate.
Claim 6
Dependent Claim
28 words
A carburetor as in claim 3 wherein the fuel mixture pipe is located away from the side walls of the body and is surrounded by the baffle plates.
Claim 7
Dependent Claim
14 words
A carburetor as in claim 4 wherein the end of the pipe is closed.
Claim 8
Dependent Claim
72 words
A carburetor as in claim 4 wherein the fuel supply includes a fuel distribution tube extending around the inner circumference of the body above the uppermost baffle plate, fuel distribution openings in the tube at intervals along its length and a fuel line joining said tube and extending outwardly of the body for supplying a flow of liquid fuel to the tube for distribution of liquid fuel onto the uppermost baffle plate.
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) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |