Patent US3653643A successfully refreshed from Google Patents.
US3653643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carburetor
Assignee: Individual
•
Filing: 1970-04-03
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Granted: 1972-04-04
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Expires: 1990-04-03
Abstract
Abstract A carburetor including a housing having a fluid fuel reservoir in the bottom, an air inlet at the top of the housing, a delivery pipe coaxially mounted within the housing and terminating short of the top of the housing, and a porous vaporizing filter substantially filling the reservoir. A baffle is concentrically mounted within said housing and extends partially into the vaporizing filter in the reservoir to deflect the incoming air through the vaporizing filter. The level of liquid fuel in the reservoir is kept above the bottom of the baffle, so that air entering the carburetor through the inlet must pass through the liquid fuel and vaporizing filter in the reservoir before discharge through the outlet. A secondary air inlet is provided in the top of the housing for controlling the fuel air ratio of the vaporized fuel passing into the delivery pipe.
Inventors
- 👤 Oliver M Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:36
CPC Classifications
F; F02; F02M; F02M17/00; F02M17/34; F02M17/18; F02M17/26; F02M17/28
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
132 words
A carburetor for an internal combustion engine, said carburetor comprising: a housing having a liquid fuel reservoir, a vaporized fuel outlet projecting upwardly above said reservoir, and a primary inlet around said outlet, an open cell plastic vaporizing filter immersed in said reservoir, baffle means extending downwardly into said filter for deflecting the primary air downwardly through said filter prior to flowing upwardly toward said outlet, means for maintaining a static fuel level above the lower end of said baffle means, a secondary air inlet connected to the top of said housing to admit air to said housing prior to the flow of vaporized fuel into said outlet, means for controlling the flow of secondary air into said housing, and means for deflecting the secondary air away from the vaporized fuel outlet.
Claim 2
Dependent Claim
132 words
A carburetor for an internal combustion engine, said carburetor comprising: a housing having a liquid fuel reservoir, a vaporized fuel outlet projecting upwardly above said reservoir, and a primary inlet around said outlet, an open cell plastic vaporizing filter immersed in said reservoir, baffle means extending downwardly into said filter for deflecting the primary air downwardly through said filter prior to flowing upwardly toward said outlet, means for maintaining a static fuel level above the lower end of said baffle means, a secondary air inlet connected to the top of said housing to admit air to said housing prior to the flow of vaporized fuel into said outlet, means for controlling the flow of secondary air into said housing, and means for deflecting the secondary air away from the vaporized fuel outlet.
Claim 3
Dependent Claim
16 words
The carburetor according to claim 1 including a primary air filter in said primary air inlet.
Claim 4
Dependent Claim
25 words
The carburetor according to claim 1 wherein said baffle means comprises a cylindrical baffle positioned between said primary air inlet and said vaporized fuel outlet.
Claim 5
Dependent Claim
155 words
A carburetor which is adapted to be mounted on the manifold of an internal combustion engine, said carburetor comprising: a cylindrical housing having a bottom wall defining a reservoir in the bottom of said housing, a porous cellular vaporizing filter in said reservoir, a delivery tube mounted in said bottom wall and extending partially upward within said housing through said vaporizing filter, a hood mounted on said housing and spaced therefrom to define an annular primary air inlet around the outside of said housing, a secondary air inlet in said hood, means mounted on said hood for deflecting secondary air away from said delivery tube, a cylindrical baffle depending downwardly from said hood and penetrating said vaporizing filter, and means for maintaining the level of liquid fuel in said reservoir above the bottom of said baffle whereby air entering said housing must pass through said vaporizing filter and liquid prior to entering said delivery tube.
Claim 6
Dependent Claim
155 words
A carburetor which is adapted to be mounted on the manifold of an internal combustion engine, said carburetor comprising: a cylindrical housing having a bottom wall defining a reservoir in the bottom of said housing, a porous cellular vaporizing filter in said reservoir, a delivery tube mounted in said bottom wall and extending partially upward within said housing through said vaporizing filter, a hood mounted on said housing and spaced therefrom to define an annular primary air inlet around the outside of said housing, a secondary air inlet in said hood, means mounted on said hood for deflecting secondary air away from said delivery tube, a cylindrical baffle depending downwardly from said hood and penetrating said vaporizing filter, and means for maintaining the level of liquid fuel in said reservoir above the bottom of said baffle whereby air entering said housing must pass through said vaporizing filter and liquid prior to entering said delivery tube.
Claim 7
Dependent Claim
16 words
The carburetor according to claim 4 including a primary air filter in said primary air inlet.
Claim 8
Dependent Claim
33 words
The carburetor according to claim 4 wherein said delivery tube extends upwardly from said vaporizing filter a distance sufficient to prevent liquid fuel droplets from rising far enough to enter said delivery tube.
References Cited (Backward Citations)
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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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |