US4359035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intake manifold fuel atomizing screen
Assignee: Individual
•
Filing: 1980-08-22
•
Granted: 1982-11-16
•
Expires: 2000-08-22
Abstract
Abstract A dished screen placed in engine intake manifold openings beneath a carburetor in the path of intake air flow with, under a one-barrel carburetor one recess dished screen being used, and with a two-barrel carburetor two recess dished screens being used. The screen units are positioned so that fuel laden air from the carburetor passes through screening of the screen units with the mesh and wire size of the screening coupled with depressed dished shape of the screen units such as to optimize vaporization atomizing of fuel in the fuel air mixture being fed to the engine. The proper shape and screening size of the dished screen units is an excellent trade-off of intake air/fuel mixture flow obstruction for more efficient fuel utilization resulting in more power and significantly improved mileage and decreased undesired emissions.
Inventors
- 👤 Edward E. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:58
CPC Classifications
F; F02; F02M; F02M29/00; F02M29/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
171 words
In an internal combustion engine intake manifold system having openings beneath engine carburetors and a PCV vacuum flow line communicating the PCV valve with the vacuum inlet of the intake manifold system: a screen unit of relatively fine mesh screening of at most a 30--30 mesh screen with maximum wire diameter of 0.020 inches having a depending formed depression sized to fit the intake opening of the intake manifold beneath a barrel of a carburetor with the depending formed depression extending down and away from the carburetor; a mounting flange surrounding the depending formed depression sized to be clamped with a carburetor gasket between the carburetor mounting boss on the intake manifold; wherein said depending formed depression has walls angled inward and away from the wall of said intake opening, and an adjustable air vacuum valve "T" fitting with an air bleed opening into the PCV vacuum line, said screen unit and "T" fitting cooperating to establish and to maintain a predetermined air/fuel combustion mixture ratio for the intake manifold system.
Claim 2
Dependent Claim
171 words
In an internal combustion engine intake manifold system having openings beneath engine carburetors and a PCV vacuum flow line communicating the PCV valve with the vacuum inlet of the intake manifold system: a screen unit of relatively fine mesh screening of at most a 30--30 mesh screen with maximum wire diameter of 0.020 inches having a depending formed depression sized to fit the intake opening of the intake manifold beneath a barrel of a carburetor with the depending formed depression extending down and away from the carburetor; a mounting flange surrounding the depending formed depression sized to be clamped with a carburetor gasket between the carburetor mounting boss on the intake manifold; wherein said depending formed depression has walls angled inward and away from the wall of said intake opening, and an adjustable air vacuum valve "T" fitting with an air bleed opening into the PCV vacuum line, said screen unit and "T" fitting cooperating to establish and to maintain a predetermined air/fuel combustion mixture ratio for the intake manifold system.
Claim 3
Dependent Claim
17 words
The fuel atomizing screen of claim 1, wherein said depending formed depression is a depressed dish shape.
Claim 4
Dependent Claim
19 words
The fuel atomizing screen of claim 1, wherein said depending formed depression is a depressed rounded hemospheric-like formed depression.
Claim 5
Dependent Claim
17 words
The fuel atomizing screen of claim 1, wherein said depending formed depression is generally a conical depression.
Claim 6
Dependent Claim
27 words
The fuel atomizing screen of claim 1, wherein said screen unit is formed of one piece of approximately 60-40 mesh screening of approximately 0.010 inch diameter wire.
Claim 7
Dependent Claim
18 words
The fuel atomizing screen of claim 1, wherein said screen unit is formed of stainless steel wire screening.
Claim 8
Dependent Claim
21 words
The system of claim 1 wherein said mounting flange is an annular extension of the mesh forming said depending formed depression.
References Cited (Backward Citations)
US1061655A
Cited
US3181833A
Cited
US3449098A
Cited
US3682608A
Cited
US3885539A
Cited
US4023544A
Cited
US4022176A
Cited
US4091786A
Cited
US4071044A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-15 | 1986-05-17 | 1986-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-15 | 1990-05-17 | 1990-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-15 | 1994-05-17 | 1994-11-16 | $7700.00 | Window Closed / Lapsed |