Patent US4628360A successfully refreshed from Google Patents.
Patent US3068085A successfully refreshed from Google Patents.
US3068085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Equalizing system for gaseous fuel feeds for internal combustion engines
Assignee: Ambac International Corp
•
Filing: 1958-01-24
•
Granted: 1962-12-11
•
Expires: 1978-01-24
Abstract
No abstract record available.
Inventors
- 👤 Roy F Ensign
- 👤 Roy K Ensign
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:27
CPC Classifications
F; F02; F02M; F02M21/00; F02B; F02B43/00; F02M2700/00; F02M2700/12; F02M2700/126; Y; Y10; Y10S; Y10S55/00; Y10S55/28; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7847
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN GASEOUS FUEL FEED SYSTEMS FORINTERNAL COMBUSTION ENGINES COMPRISING A CARBURETER HAVING AN AIR AND MIXTURE PASSAGE WITH AN AIR INTAKE, A VENTURI THROAT AND CONNECTION TO THE ENGINE INTAKE MANIFOLD, A GAS PRESSURE REGULATOR HAVING A DELIVERY CHAMBER, A GAS DELIVERY PASSAGE SEPARATE FROM THE AIR AND MIXTURE PASSAGE AND DELIVERING GAS FROM SAID DELIVERY CHAMBER DIRECTLY TO THE VENTRI THROAT, A PRESSURE CONTROLLING DIAPHRAGM-VALVE SYSTEM ASSOCIATED WITH THE DELIVERY CHAMBER, A PRESSURE ESTABLISHING REFERENCE CHAMBER AT ONE FACE OF THE DIA-
Claim 2
Dependent Claim
83 words
IN GASEOUS FUEL FEED SYSTEMS FORINTERNAL COMBUSTION ENGINES COMPRISING A CARBURETER HAVING AN AIR AND MIXTURE PASSAGE WITH AN AIR INTAKE, A VENTURI THROAT AND CONNECTION TO THE ENGINE INTAKE MANIFOLD, A GAS PRESSURE REGULATOR HAVING A DELIVERY CHAMBER, A GAS DELIVERY PASSAGE SEPARATE FROM THE AIR AND MIXTURE PASSAGE AND DELIVERING GAS FROM SAID DELIVERY CHAMBER DIRECTLY TO THE VENTRI THROAT, A PRESSURE CONTROLLING DIAPHRAGM-VALVE SYSTEM ASSOCIATED WITH THE DELIVERY CHAMBER, A PRESSURE ESTABLISHING REFERENCE CHAMBER AT ONE FACE OF THE DIA-
References Cited (Backward Citations)
US2073299A
Cited
US2563288A
Cited
US2634098A
Cited
US2754186A
Cited
US2754185A
Cited
US2775984A
Cited
US2886065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |