Patent US3250264A successfully refreshed from Google Patents.
US3250264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine improvements
Assignee: Ethyl Corp
•
Filing: 1965-03-29
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Granted: 1966-05-10
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Expires: 1985-03-29
Abstract
No abstract record available.
Inventors
- 👤 Bartholomew Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:09
CPC Classifications
F; F02; F02M; F02M7/00; F02M11/00; F02M11/02; F02M13/00; F02M13/02; F02M13/023; F02M3/00; F02M3/02; F02M3/04; F02M3/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A GASOLINE ENGINE INDUCTION SYSTEM HAVING AN INTAKE MANIFOLD AND A CARBURETOR, THE CARBURETOR INCLUDING A LIQUID FUEL BOWL, AN AIR SUPPLY CONDUIT INCLUDING A VENTURI CONNECTED TO RECEIVE AIR AND FUEL AND DELIVER THEM TO THE MANIFOLD, A THROTTLE VALVE IN SAID CONDUIT AND CONNECTED TO SEAT AGAINST THE CONDUIT WALLS TO RPEVENT ANY SIGNIFICANT PASSAGE OF AIR BETWEEN THE VALVE AND THE WALLS WHEN THE VALVE IS SO SEATED, BY-PASS ELEMENTS CONNECTED TO BY-PASS AN IDLE AIR FLOW STREAM FROM ONE SIDE OF THE VALVE TO THE OTHER WHEN THE VALV IS SO SEATED, FUEL CONTROL ELEMENTS DEVOID OF AN ACCELERATION PUMP CONNECTED TO (A) CONTROL THE FLOW OF FUEL FROM THE BOWL TO THE AIR SUPPLY CONDUIT, (B) SHUT OFF SUCH FLOW WHEN DOWNSTREAM OF THE THROTTLE VALVE THERE IS AN INCREASE IN VACUUM SUBSTANTIALLY ABOVE IDLE VACUUM, AND (C) SUPPLY AN EXTRA AMOUNT OF FUEL TO THE AIR SUPPLY CONDUIT WHEN SUCH SHUTOFF IS TERMINATED, AND THROTTLE-CLOSING-DELAY MEANS CONNECTED TO PREVENT THE THROTTLE FROM CLOSING ABRUPTLY.
Claim 2
Dependent Claim
170 words
A GASOLINE ENGINE INDUCTION SYSTEM HAVING AN INTAKE MANIFOLD AND A CARBURETOR, THE CARBURETOR INCLUDING A LIQUID FUEL BOWL, AN AIR SUPPLY CONDUIT INCLUDING A VENTURI CONNECTED TO RECEIVE AIR AND FUEL AND DELIVER THEM TO THE MANIFOLD, A THROTTLE VALVE IN SAID CONDUIT AND CONNECTED TO SEAT AGAINST THE CONDUIT WALLS TO RPEVENT ANY SIGNIFICANT PASSAGE OF AIR BETWEEN THE VALVE AND THE WALLS WHEN THE VALVE IS SO SEATED, BY-PASS ELEMENTS CONNECTED TO BY-PASS AN IDLE AIR FLOW STREAM FROM ONE SIDE OF THE VALVE TO THE OTHER WHEN THE VALV IS SO SEATED, FUEL CONTROL ELEMENTS DEVOID OF AN ACCELERATION PUMP CONNECTED TO (A) CONTROL THE FLOW OF FUEL FROM THE BOWL TO THE AIR SUPPLY CONDUIT, (B) SHUT OFF SUCH FLOW WHEN DOWNSTREAM OF THE THROTTLE VALVE THERE IS AN INCREASE IN VACUUM SUBSTANTIALLY ABOVE IDLE VACUUM, AND (C) SUPPLY AN EXTRA AMOUNT OF FUEL TO THE AIR SUPPLY CONDUIT WHEN SUCH SHUTOFF IS TERMINATED, AND THROTTLE-CLOSING-DELAY MEANS CONNECTED TO PREVENT THE THROTTLE FROM CLOSING ABRUPTLY.
References Cited (Backward Citations)
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US1982049A
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US2386669A
Cited
US2879756A
Cited
US2908363A
Cited
US2993485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |