US3139874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carburetor
Assignee: ACF Industries Inc
•
Filing: 1963-05-16
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Granted: 1964-07-07
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Expires: 1983-05-16
Abstract
No abstract record available.
Inventors
- 👤 John H Krein
- 👤 Forrest W Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:15
CPC Classifications
F; F02; F02M; F02M15/00; F02M15/02; F02M15/027; F02M1/00; F02M3/00; F02M3/08; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/434; F02M2700/4342; F02M2700/4345; Y; Y10; Y10S; Y10S261/00; Y10S261/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A COMBINATION, AN INTERNAL COMBUSTION ENGINE HAVING AN INTAKE MANIFOLD AND AN EXHAUST SYSTEM, A CARBURETOR MOUNTED ON SAID INTAKE MANIFOLD, SAID INTAKE MANIFOLD HAVING AN EXHAUST GAS PASSAGE ADJACENT TO A PORTION OF SAID CARBURETOR AND CONNECTED TO SAID EXHAUST SYSTEM TO CONVEY HOT EXHAUST GASES TO SAID CARBURETOR PORTION, SAID CARBURETOR HAVING AN IDLE SYSTEM CONNECTED TO SAID INTAKE MANIFOLD, A THIN CORROSION RESISTANT HEAT CONDUCTIVE SHIM LOCATED BETWEEN SAID CARBURETOR PORTION AND SAID INTAKE MANIFOLD AND EXPOSED TO SAID EXHAUST GAS PASSAGE TO PROTECT SAID CARBURETOR FROM DAMAGE BY EXHAUST GAS CORROSION, MEANS FOR SPOILING SAID IDLE SYSTEM TO PREVENT SAID ENGINE AT IDLE FROM OPERATING AT LOW SPEEDS IF SAID SHIM IS NOT LOCATED BETWEEN THE CARBURETOR AND THE INTAKE MANIFOLD.
Claim 2
Dependent Claim
126 words
IN A COMBINATION, AN INTERNAL COMBUSTION ENGINE HAVING AN INTAKE MANIFOLD AND AN EXHAUST SYSTEM, A CARBURETOR MOUNTED ON SAID INTAKE MANIFOLD, SAID INTAKE MANIFOLD HAVING AN EXHAUST GAS PASSAGE ADJACENT TO A PORTION OF SAID CARBURETOR AND CONNECTED TO SAID EXHAUST SYSTEM TO CONVEY HOT EXHAUST GASES TO SAID CARBURETOR PORTION, SAID CARBURETOR HAVING AN IDLE SYSTEM CONNECTED TO SAID INTAKE MANIFOLD, A THIN CORROSION RESISTANT HEAT CONDUCTIVE SHIM LOCATED BETWEEN SAID CARBURETOR PORTION AND SAID INTAKE MANIFOLD AND EXPOSED TO SAID EXHAUST GAS PASSAGE TO PROTECT SAID CARBURETOR FROM DAMAGE BY EXHAUST GAS CORROSION, MEANS FOR SPOILING SAID IDLE SYSTEM TO PREVENT SAID ENGINE AT IDLE FROM OPERATING AT LOW SPEEDS IF SAID SHIM IS NOT LOCATED BETWEEN THE CARBURETOR AND THE INTAKE MANIFOLD.
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) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |