US3306034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for exhaust gas purification
Assignee: Individual
•
Filing: 1965-05-17
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Granted: 1967-02-28
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Expires: 1985-05-17
Abstract
No abstract record available.
Inventors
- 👤 Boyd Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:59
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
236 words
A METHOD OF EXHAUST GAS PURIFICATION COMPRISING THE STEPS OF: INTRODUCING THE EXHAUST GAS TO BE PURIFIED INTO A FIRST CONFINED AREA; PASSING SAID EXHAUST GASES FROM SAID FIRST CONFINED AREA INTO A FIRST EXPANSION CHAMBER HAVING A DIAMETER IN EXCESS OF SAID FIRST CONFINED AREA; PERMITTING SAID EXHAUST GASES TO EXPAND IN SAID FIRST EXPANSION CHAMBER; FLOWING SAID EXHAUST GASES FROM SAID EXPANSION CHAMBER TO AT LEAST ONE MIXING ZONE HAVING A RESTRICTED DIAMETER LESS THAN THAT OF SAID EXPANSION CHAMBER; COMMUNICATING SAID MIXING ZONE WITH THE ATMOSPHERE TO OBTAIN AN AIR SUPPLY; FLOWING SAID EXHAUST GASES THROUGH SAID MIXING ZONE AT INCREASED VELOCITY, THEREBY CREATING A REDUCED PRESSURE WHICH DRAWS AIR FROM THE ATMOSPHERE INTO SAID MIXING ZONE; PERMITTING SAID EXHAUST GASES AND SAID AIR TO MIX AND COMBINE IN SAID MIXING ZONE TO THEREBY CAUSE SPONTANEOUS COMBUSTION WHICH CREATES A FIREBALL IN SAID MIXING ZONE; FLOWING SAID EXHAUST GASES FROM THE FIREBALL IN SAID MIXING ZONE INTO A SECOND EXPANSION CHAMBER HAVING A DIAMETER IN EXCESS OF THAT OF SAID MIXING ZONE; PERMITTING SAID EXHAUST GASES TO EXPAND IN SAID SECOND EXPANSION CHAMBER; RETURNING AT LEAST A PORTION OF SAID EXPANDED GASES IN SAID SECOND EXPANSION CHAMBER INTO CONTACT WITH SAID FIREBALL FOR A SECONDARY COMBUSTION EFFECT; AND EXCITING SAID EXHAUST GASES FROM SAID SECOND EXPANSION CHAMBER INTO A SECOND CONFINED AREA HAVING A DIAMETER SMALLER THAN THAT OF SAID SECOND EXPANSION CHAMBER.
Claim 2
Independent Claim
236 words
A METHOD OF EXHAUST GAS PURIFICATION COMPRISING THE STEPS OF: INTRODUCING THE EXHAUST GAS TO BE PURIFIED INTO A FIRST CONFINED AREA; PASSING SAID EXHAUST GASES FROM SAID FIRST CONFINED AREA INTO A FIRST EXPANSION CHAMBER HAVING A DIAMETER IN EXCESS OF SAID FIRST CONFINED AREA; PERMITTING SAID EXHAUST GASES TO EXPAND IN SAID FIRST EXPANSION CHAMBER; FLOWING SAID EXHAUST GASES FROM SAID EXPANSION CHAMBER TO AT LEAST ONE MIXING ZONE HAVING A RESTRICTED DIAMETER LESS THAN THAT OF SAID EXPANSION CHAMBER; COMMUNICATING SAID MIXING ZONE WITH THE ATMOSPHERE TO OBTAIN AN AIR SUPPLY; FLOWING SAID EXHAUST GASES THROUGH SAID MIXING ZONE AT INCREASED VELOCITY, THEREBY CREATING A REDUCED PRESSURE WHICH DRAWS AIR FROM THE ATMOSPHERE INTO SAID MIXING ZONE; PERMITTING SAID EXHAUST GASES AND SAID AIR TO MIX AND COMBINE IN SAID MIXING ZONE TO THEREBY CAUSE SPONTANEOUS COMBUSTION WHICH CREATES A FIREBALL IN SAID MIXING ZONE; FLOWING SAID EXHAUST GASES FROM THE FIREBALL IN SAID MIXING ZONE INTO A SECOND EXPANSION CHAMBER HAVING A DIAMETER IN EXCESS OF THAT OF SAID MIXING ZONE; PERMITTING SAID EXHAUST GASES TO EXPAND IN SAID SECOND EXPANSION CHAMBER; RETURNING AT LEAST A PORTION OF SAID EXPANDED GASES IN SAID SECOND EXPANSION CHAMBER INTO CONTACT WITH SAID FIREBALL FOR A SECONDARY COMBUSTION EFFECT; AND EXCITING SAID EXHAUST GASES FROM SAID SECOND EXPANSION CHAMBER INTO A SECOND CONFINED AREA HAVING A DIAMETER SMALLER THAN THAT OF SAID SECOND EXPANSION CHAMBER.
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |