US3247665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic muffler construction for exhaust emission control in an internal combustion engine system
Assignee: Texaco Inc
•
Filing: 1964-04-02
•
Granted: 1966-04-26
•
Expires: 1984-04-02
Abstract
No abstract record available.
Inventors
- 👤 Milton D Behrens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:25
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/944; F; F01; F01N; F01N13/00; F01N13/011; F01N13/017; F01N3/00; F01N3/08; F01N3/10; F01N3/18; F01N3/20; F01N3/24; F01N3/28; F01N3/2882; F01N3/2885; F01N3/30; F01N3/32; F01N2240/00; F01N2240/20; F01N2310/00; F01N2310/04; F01N2570/00; F01N2570/02; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
IN THE COMBINATION OF AN INTERNAL COMBUSTION ENGINE HAVING A CYLINDER WITH MEANS FOR RDUCING THE AMOUNT OF POLLUTANTS INCLUDING RESIDUAL COMBUSTIBLES IN THE EXHAUST EMISSIONS FROM SAID CYLINDER COMPRISING AN EXHAUST SYSTEM LEADING FROM AN EXHAUST PORT OF SAID CYLINDER, MEANS FOR PROVIDING AIR IN AT LEAST STOICHIOMETRIC RATIO ADJACENT AND DOWNSTREAM OF SAID EXHAUST PORT FOR COMBUSTION OF SAID RESIDUAL COMBUSTIBLES AMONG SAID EXHAUST EMISSIONS IN SAID EXHAUST SYSTEM, AND MEANS FOR CONTROLLING THE BACK PRESSURE IN SAID EXHAUST SYSTEM COMPRISING VALVE MEANS POSITIONED THEREIN DOWNSTREAM FRO M SAID EXHAUST PORT FUNCTIONING TO RESTRICT MASS FLOW AT THE LOWER ENGINE SPEEDS ABOVE IDLE THEREBY TO MAINTAIN A BACK PRESSURE HIGHER THAN THE NORMAL BACK PRESSURE OF SAID EXHAUST SYSTEM WITHOUT SAID VALVE MEANS AND OPENI NG AT THE HIGHER SPEEDS AND MASS FLOW RATES WHEN SAID NORMAL BACK PRESSURE WITHOUT SAID VALVE MEANS IS ABOVE THE IMPOSED BACK PRESSURE, A CATALYTIC MUFFLER CONSTRUCTION LOCATED UP-
Claim 2
Dependent Claim
157 words
IN THE COMBINATION OF AN INTERNAL COMBUSTION ENGINE HAVING A CYLINDER WITH MEANS FOR RDUCING THE AMOUNT OF POLLUTANTS INCLUDING RESIDUAL COMBUSTIBLES IN THE EXHAUST EMISSIONS FROM SAID CYLINDER COMPRISING AN EXHAUST SYSTEM LEADING FROM AN EXHAUST PORT OF SAID CYLINDER, MEANS FOR PROVIDING AIR IN AT LEAST STOICHIOMETRIC RATIO ADJACENT AND DOWNSTREAM OF SAID EXHAUST PORT FOR COMBUSTION OF SAID RESIDUAL COMBUSTIBLES AMONG SAID EXHAUST EMISSIONS IN SAID EXHAUST SYSTEM, AND MEANS FOR CONTROLLING THE BACK PRESSURE IN SAID EXHAUST SYSTEM COMPRISING VALVE MEANS POSITIONED THEREIN DOWNSTREAM FRO M SAID EXHAUST PORT FUNCTIONING TO RESTRICT MASS FLOW AT THE LOWER ENGINE SPEEDS ABOVE IDLE THEREBY TO MAINTAIN A BACK PRESSURE HIGHER THAN THE NORMAL BACK PRESSURE OF SAID EXHAUST SYSTEM WITHOUT SAID VALVE MEANS AND OPENI NG AT THE HIGHER SPEEDS AND MASS FLOW RATES WHEN SAID NORMAL BACK PRESSURE WITHOUT SAID VALVE MEANS IS ABOVE THE IMPOSED BACK PRESSURE, A CATALYTIC MUFFLER CONSTRUCTION LOCATED UP-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |