US3213608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-pollutant device and method
Assignee: Individual
•
Filing: 1965-04-05
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Granted: 1965-10-26
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Expires: 1985-04-05
Abstract
No abstract record available.
Inventors
- 👤 Horace V Littell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:41
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/18; F01N3/22; F01N3/24; F01N3/30; F01N3/34; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
THE METHOD OF REDUCING THE AMOUNT OF AIR POLLUTANTS IN THE EXHAUST OF AN INTERNAL COMBUSTION ENGINE USING FUEL CONTAINING SLOW-BURNING ADDITIVES, SAID METHOD CONSISTING IN (A) INTRODUCING OXYGEN COMBINED WITH FUMES EMANATING FROM THE CRANKCASE OF SAID ENGINE INTO THE EXHAUST GASES FROM THE CYLINDERS OF SAID ENGINE AT A POINT WHERE SAID GASES ENTER THE EXHAUST MANIFOLD, WHEREBY SAID OXYGEN-FUMES MIXTURE INCREASES THE TEMPERATURE OF SAID GASES TO A DEGREE THAT WILL IGNITE SLOW-BURNING ADDITIVES IN SAID GASES, AND (B) CONTROLLING SUCH INTRODUCTION OF THE OXYGEN-FUMES MIXTURE BY VARIATIONS IN THE VACUUM IN THE INTAKE MANIFOLD, A HIGHER RANGE OF VACUUM SHUTTING OFF SAID FLOW AND THE LOWER RANGE INDUCING SAID FLOW.
Claim 2
Independent Claim
114 words
THE METHOD OF REDUCING THE AMOUNT OF AIR POLLUTANTS IN THE EXHAUST OF AN INTERNAL COMBUSTION ENGINE USING FUEL CONTAINING SLOW-BURNING ADDITIVES, SAID METHOD CONSISTING IN (A) INTRODUCING OXYGEN COMBINED WITH FUMES EMANATING FROM THE CRANKCASE OF SAID ENGINE INTO THE EXHAUST GASES FROM THE CYLINDERS OF SAID ENGINE AT A POINT WHERE SAID GASES ENTER THE EXHAUST MANIFOLD, WHEREBY SAID OXYGEN-FUMES MIXTURE INCREASES THE TEMPERATURE OF SAID GASES TO A DEGREE THAT WILL IGNITE SLOW-BURNING ADDITIVES IN SAID GASES, AND (B) CONTROLLING SUCH INTRODUCTION OF THE OXYGEN-FUMES MIXTURE BY VARIATIONS IN THE VACUUM IN THE INTAKE MANIFOLD, A HIGHER RANGE OF VACUUM SHUTTING OFF SAID FLOW AND THE LOWER RANGE INDUCING SAID FLOW.
Claim 3
Dependent Claim
40 words
IN COMBINATION, (A) AN INTERNAL COMBUSTION ENGINE HAVING AN INTAKE MANIFOLD IN WHICH VACUUM VARIES ACCORDING TO THE THROTTLED AND LOAD CONDITIONS ON SAID ENGINE, HAVING AN EXHAUST MANIFOLD, AND A CRANKCASE, (B) A LINE FROM A SOURCE OF AIR,
Claim 4
Dependent Claim
40 words
IN COMBINATION, (A) AN INTERNAL COMBUSTION ENGINE HAVING AN INTAKE MANIFOLD IN WHICH VACUUM VARIES ACCORDING TO THE THROTTLED AND LOAD CONDITIONS ON SAID ENGINE, HAVING AN EXHAUST MANIFOLD, AND A CRANKCASE, (B) A LINE FROM A SOURCE OF AIR,
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |