Patent US3135253A successfully refreshed from Google Patents.
US3135253A
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US
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Recycled exhaust gas regulation
Assignee: MAN AG
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Filing: 1961-11-15
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Granted: 1964-06-02
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Expires: 1981-11-15
Abstract
No abstract record available.
Inventors
- 👤 Muhlberg Erhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:16
CPC Classifications
F; F02; F02D; F02D21/00; F02D21/06; F02D21/08; F02M; F02M1/00; F02M26/00; F02M2026/001; F02M2026/004; F02M26/65; F02M26/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN AN INTERNAL COMBUSTION DIESEL ENGINE HAVING A COMBUSTION AIR INTAKE PIPE AND AN EXHAUST GAS PIPE, AND MEANS FOR RECYCLING AT LEAST A PORTION OF THE HOT EXHAUST GAS TO THE AIR INTAKE PIPE FOR MIXING WITH AND HEATING THE INTAKE AIR, THE IMPROVEMENT COMPRISING TEMPERATURE SENSITIVE MEANS RESPONSIVE TO THE TEMPERATURE OF THE MIXED INTAKE AIR AND EXHAUST GAS FOR INCREASING THE QUANTITY OF EXHAUST GAS RECYCLED TO THE AIR INTAKE PIPE AS THE ENGINE OPERATING CONDITIONS DECREASE IN TEMPERATURE, AND VICE VERSA.
Claim 2
Dependent Claim
85 words
IN AN INTERNAL COMBUSTION DIESEL ENGINE HAVING A COMBUSTION AIR INTAKE PIPE AND AN EXHAUST GAS PIPE, AND MEANS FOR RECYCLING AT LEAST A PORTION OF THE HOT EXHAUST GAS TO THE AIR INTAKE PIPE FOR MIXING WITH AND HEATING THE INTAKE AIR, THE IMPROVEMENT COMPRISING TEMPERATURE SENSITIVE MEANS RESPONSIVE TO THE TEMPERATURE OF THE MIXED INTAKE AIR AND EXHAUST GAS FOR INCREASING THE QUANTITY OF EXHAUST GAS RECYCLED TO THE AIR INTAKE PIPE AS THE ENGINE OPERATING CONDITIONS DECREASE IN TEMPERATURE, AND VICE VERSA.
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) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |