US3257798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust treatment apparatus and method
Assignee: Union Oil Company of California
•
Filing: 1965-08-17
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Granted: 1966-06-28
•
Expires: 1985-08-17
Abstract
No abstract record available.
Inventors
- 👤 Robert H Hass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:09
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/037; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2882; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
A METHOD OF TREATING PARTICLE-LADEN INTERNAL COMBUSTION ENGINE EXHAUST GAS, WHICH COMPRISES: ADDING AIR TO THE EXHAUST GAS DISCHARGED FROM SAID ENGINE TO PRODUCE AN EXHAUST GAS MIXTURE OF REDUCED TEMPERATURE; CAUSING SAID EXHAUST GAS MIXTURE TO FLOW IN CIRCULAR PATH IN A FIRST CYCLONE SEPARATION ZONE WHEREIN SAID EXHAUST GAS MIXTURE IS SEPARATED INTO FIRST CLEANED EXHAUST GAS MIXTURE OF REDUCED PARTICLE CONTENT AND A FIRST PARTICLE-RICH EXHAUST GAS MIXTURE OF INCREASED PARTICLE CONTENT; WITHDRAWING SAID FIRST CLEANED EXHAUST GAS MIXTURE FROM SAID FIRST CYCLONE SEPARATION ZONE; WITHDRAWING SAID FIRST PARTICLE-RICH EXHAUST GAS MIXTURE FROM SAID FIRST CYCLONE SEPARATION ZONE; CAUSING SAID FIRST PARTICLE-RICH EXHAUST GAS MIXTURE TO FLOW IN A CIRCULAR PATH IN A SECOND CYCLONE SEPARATION ZONE WHEREBY SOLID PARTICLES ARE SEPARATED FROM SAID EXHAUST GAS MIXTURE BY INERTIA TO PRODUCE A SECOND CLEANED EXHAUST GAS MIXTURE OF REDUCED PARTICLE CONTENT; WITHDRAWING SAID SECOND CLEANED EXHAUST GAS MIXTURE FROM SAID SECOND CYCLONE SEPARATION ZONE; PASSING SAID FIRST CLEANED EXHAUST GAS MIXTURE AND SAID SECOND CLEANED EXHAUST GAS MIXTURE TO AN EXHAUST GAS CONDITIONER IN WHICH THE NOXIOUS COMPONENTS OF SAID EXHAUST GASES ARE REMOVED; AND DISCHARGING CONDITIONED EXHAUST GAS FROM SAID EXHAUST GAS CONDITIONER.
Claim 2
Independent Claim
197 words
A METHOD OF TREATING PARTICLE-LADEN INTERNAL COMBUSTION ENGINE EXHAUST GAS, WHICH COMPRISES: ADDING AIR TO THE EXHAUST GAS DISCHARGED FROM SAID ENGINE TO PRODUCE AN EXHAUST GAS MIXTURE OF REDUCED TEMPERATURE; CAUSING SAID EXHAUST GAS MIXTURE TO FLOW IN CIRCULAR PATH IN A FIRST CYCLONE SEPARATION ZONE WHEREIN SAID EXHAUST GAS MIXTURE IS SEPARATED INTO FIRST CLEANED EXHAUST GAS MIXTURE OF REDUCED PARTICLE CONTENT AND A FIRST PARTICLE-RICH EXHAUST GAS MIXTURE OF INCREASED PARTICLE CONTENT; WITHDRAWING SAID FIRST CLEANED EXHAUST GAS MIXTURE FROM SAID FIRST CYCLONE SEPARATION ZONE; WITHDRAWING SAID FIRST PARTICLE-RICH EXHAUST GAS MIXTURE FROM SAID FIRST CYCLONE SEPARATION ZONE; CAUSING SAID FIRST PARTICLE-RICH EXHAUST GAS MIXTURE TO FLOW IN A CIRCULAR PATH IN A SECOND CYCLONE SEPARATION ZONE WHEREBY SOLID PARTICLES ARE SEPARATED FROM SAID EXHAUST GAS MIXTURE BY INERTIA TO PRODUCE A SECOND CLEANED EXHAUST GAS MIXTURE OF REDUCED PARTICLE CONTENT; WITHDRAWING SAID SECOND CLEANED EXHAUST GAS MIXTURE FROM SAID SECOND CYCLONE SEPARATION ZONE; PASSING SAID FIRST CLEANED EXHAUST GAS MIXTURE AND SAID SECOND CLEANED EXHAUST GAS MIXTURE TO AN EXHAUST GAS CONDITIONER IN WHICH THE NOXIOUS COMPONENTS OF SAID EXHAUST GASES ARE REMOVED; AND DISCHARGING CONDITIONED EXHAUST GAS FROM SAID EXHAUST GAS CONDITIONER.
References Cited (Backward Citations)
US2059814A
Cited
US3017249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |