Patent US3605710A successfully refreshed from Google Patents.
US3605710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for improving gasoline combustion in internal combustion engines
Assignee: Individual
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Filing: 1970-06-01
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Granted: 1971-09-20
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Expires: 1990-06-01
Abstract
Abstract AN APPARATUS AND METHOD FOR IMPROVING GASOLINE COMBUSTION IN INTERNAL COMBUSTION ENGINES. LEAD IS NOW ADDED TO GASOLINE TO RETARD ITS COMBUSTION. THE PRESENT INVENTION ELIMINATES LEAD AND UTILIZES A DELIBERATE FEEDBACK OF EXHAUST FUMES TO THE INTAKE MANIFOLD TO IMPROVE THE COMBUSTION THROUGH SLOWER BURNING OF THE GASOLINE. EXHAUST FUMES PASS THROUGH AN EXHAUST FILTER AND COOLER TO A CONTROL VALVE ASSEMBLY. DEPRESSION OF THE ACCELERATOR AUTOMATICALLY CONTROLS THE FLOW OF EXHAUST FUMES FROM SUCH FUMES ARE MIXED WITH THE GASOLINE.
Inventors
- 👤 Carl W Helwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:07
CPC Classifications
F; F02; F02M; F02M26/00; F02M26/52; F02M26/63; F02M26/13; F02M26/35; F02M26/55; F02M26/58; F02M26/65; F02M26/66; F02M26/68; F02M26/22; F02M26/29; F02M26/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |