Patent US3084539A successfully refreshed from Google Patents.
US3084539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Systems for determining fuel consumption of internal combustion vehicle engines
Assignee: Motors Liquidation Co
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Filing: 1958-03-24
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Granted: 1963-04-09
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Expires: 1978-03-24
Abstract
No abstract record available.
Inventors
- 👤 Joseph T Wentworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:57
CPC Classifications
G; G01; G01F; G01F9/00; G01F9/02; G01F9/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A SYSTEM FOR DETERMINING INSTANTANEOUSLY AND AUTOMATICALLY THE RATIO OF CAR SPEED WITH RESPECT TO FUEL CONSUMPTION RATE OF A VEHICLE PROPELLED BY AN INTERNAL COMBUSTION ENGINE, SAID SYSTEM COMPRISING MEANS FOR GENERATING IN A CIRCUIT AN ELECTRICAL CURRENT CORRESPONDING WITH THE VEHICLE SPEED, A RHEOSTAT IN SAID CIRCUIT, A THROTTLE VALVE FOR CONTROLLING THE FLOW RATE OF A FUEL BEING FED TO SAID ENGINE, SAID THROTTLE VALVE AND RHEOSTAT BEING CONNECTED FOR VARYING THE RESISTANCE OF THE LATTER TO SAID CURRENT SUBSTANTIALLY IN ACCORDANCE WITH A VARIANCE IN THE THROTTLE VALVE POSITION, MEANS CONNECTED WITH SAID RHEOSTAT AND OPERATED BY THE INTAKE MANIFOLD VACUUM OF SAID ENGINE TO REDUCE SAID RESISTANCE UNDER HIGH ENGINE LOAD CONDITIONS, AND MEANS FOR INDICATING THE CURRENT FLOW THROUGH SAID CIRCUIT AS AN INDICATION OF THE SAID RATIO.
Claim 2
Independent Claim
134 words
A SYSTEM FOR DETERMINING INSTANTANEOUSLY AND AUTOMATICALLY THE RATIO OF CAR SPEED WITH RESPECT TO FUEL CONSUMPTION RATE OF A VEHICLE PROPELLED BY AN INTERNAL COMBUSTION ENGINE, SAID SYSTEM COMPRISING MEANS FOR GENERATING IN A CIRCUIT AN ELECTRICAL CURRENT CORRESPONDING WITH THE VEHICLE SPEED, A RHEOSTAT IN SAID CIRCUIT, A THROTTLE VALVE FOR CONTROLLING THE FLOW RATE OF A FUEL BEING FED TO SAID ENGINE, SAID THROTTLE VALVE AND RHEOSTAT BEING CONNECTED FOR VARYING THE RESISTANCE OF THE LATTER TO SAID CURRENT SUBSTANTIALLY IN ACCORDANCE WITH A VARIANCE IN THE THROTTLE VALVE POSITION, MEANS CONNECTED WITH SAID RHEOSTAT AND OPERATED BY THE INTAKE MANIFOLD VACUUM OF SAID ENGINE TO REDUCE SAID RESISTANCE UNDER HIGH ENGINE LOAD CONDITIONS, AND MEANS FOR INDICATING THE CURRENT FLOW THROUGH SAID CIRCUIT AS AN INDICATION OF THE SAID RATIO.
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) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |