US3237615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust recycle system
Assignee: Richfield Oil Corp
•
Filing: 1962-11-13
•
Granted: 1966-03-01
•
Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Harold D Daigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:43
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F02B47/00; F02B47/04; F02B47/08; F02M; F02M26/00; F02M26/13; F02M26/17; F02M26/19; F02M26/20; F02M26/41; F02M26/42; F02M26/44; F02M1/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
IN AN EXHAUST RECYCLE SYSTEM FOR AN INTERNAL COMBUSTION ENGINE HAVING PLURALITY OF COMBUSTION CHAMBERS AND VALVED EXHAUST OUTLETS LEADING FROM SAID COMBUSTION CHAMBERS, AN AIR-FUEL MIXER DEVICE HAVING A THROTTLE VALVE, AND AN INDUCTION MANIFOLD CONNECTING SAID MIXER DEVICE TO SAID COMBUSTION CHAMBERS THE IMPROVEMENT COMPRISING, IN COMBINATION: A PLURALITY OF CONDUITS COMMUNICATING WITH SAID VALVED EXHAUST OUTLETS AND PASSING INTO HEAT EXCHANGE RELATIONSHIP WITH THE INTERIOR OF SAID INDUCTION MANIFOLD, SAID CONDUITS TERMINATING IN SAID INDUCTION MANI-
Claim 2
Dependent Claim
79 words
IN AN EXHAUST RECYCLE SYSTEM FOR AN INTERNAL COMBUSTION ENGINE HAVING PLURALITY OF COMBUSTION CHAMBERS AND VALVED EXHAUST OUTLETS LEADING FROM SAID COMBUSTION CHAMBERS, AN AIR-FUEL MIXER DEVICE HAVING A THROTTLE VALVE, AND AN INDUCTION MANIFOLD CONNECTING SAID MIXER DEVICE TO SAID COMBUSTION CHAMBERS THE IMPROVEMENT COMPRISING, IN COMBINATION: A PLURALITY OF CONDUITS COMMUNICATING WITH SAID VALVED EXHAUST OUTLETS AND PASSING INTO HEAT EXCHANGE RELATIONSHIP WITH THE INTERIOR OF SAID INDUCTION MANIFOLD, SAID CONDUITS TERMINATING IN SAID INDUCTION MANI-
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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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |