Patent US3294073A successfully refreshed from Google Patents.
US3294073A
Expired / Lapsed
US
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Attachment for internal combustion engines for reducing noxious gases in the exhaust
Assignee: HERMAN L MEHR
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Filing: 1964-05-06
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Granted: 1966-12-27
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Expires: 1984-05-06
Abstract
No abstract record available.
Inventors
- 👤 Bressan Ferruccio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:49
CPC Classifications
F; F02; F02M; F02M26/00; F02M26/13; F02M26/35; F02M26/17; F02M26/19; F02M26/14; F02M26/42; F02M26/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
AN ATTACHMENT FOR INTERNAL COMBUSTION ENGINES WHICH HAVE A CARBURETOR HAVING AT LEAST ONE FUEL JET, AN INTAKE MANIFOLD LEADING FROM THE CARBURETOR TO THE ENGINE CYLINDERS AND A PIPE FOR THE EXHAUST GASES, SAID ATTACHMENT COMPRISING A CONNECTION FOR LEADING THE HOT GASES TO THE INTAKE MANIFOLD FROM A POINT IN THE EXHAUST PIPE WHERE THE EXHAUST GASES ARE AT A HIGH TEMPERATURE, SAID CONNECTION INCLUDING A SCREEN FOR SCREENING THE HOT GASES AND A METERING ORIFICE MEANS HAVING A FIXED CROSS-SECTIONAL AREA WHICH IS ONE HALF THE CARBURETOR FUEL JET AREA OR SMALL VARIATIONS THEREFROM.
Claim 2
Dependent Claim
97 words
AN ATTACHMENT FOR INTERNAL COMBUSTION ENGINES WHICH HAVE A CARBURETOR HAVING AT LEAST ONE FUEL JET, AN INTAKE MANIFOLD LEADING FROM THE CARBURETOR TO THE ENGINE CYLINDERS AND A PIPE FOR THE EXHAUST GASES, SAID ATTACHMENT COMPRISING A CONNECTION FOR LEADING THE HOT GASES TO THE INTAKE MANIFOLD FROM A POINT IN THE EXHAUST PIPE WHERE THE EXHAUST GASES ARE AT A HIGH TEMPERATURE, SAID CONNECTION INCLUDING A SCREEN FOR SCREENING THE HOT GASES AND A METERING ORIFICE MEANS HAVING A FIXED CROSS-SECTIONAL AREA WHICH IS ONE HALF THE CARBURETOR FUEL JET AREA OR SMALL VARIATIONS THEREFROM.
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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |