US3751920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust gas reactor
Assignee: EIDP Inc
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Filing: 1971-12-09
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Granted: 1973-08-14
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Expires: 1991-12-09
Abstract
Abstract Hydrocarbon, carbon monixide, and nitrogen oxide pollutants emitted by post oxidation type exhaust gas reactors can be substantially reduced by redirecting the exhaust gases as they enter the reactor through the use of deflectors of special design and the optional use of improved means for directing the gases onto said deflectors.
Inventors
- 👤 I Rosenlund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:42
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/08; F01N13/10; F01N13/102; F01N3/00; F01N3/08; F01N3/10; F01N2240/00; F01N2240/20; F02; F02B; F02B1/00; F02B1/02; F02B1/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
150 words
A reactor of claim 1 wherein two gas deflector means are positioned within the core across from and in concave relationship to each exhaust gas inlet to the core, and wherein the deflector cross sections are defined by the equation cos phi /2 r1/r2 sin Alpha /2 - sin (180- Alpha /2- Beta ) wherein r1 is the radius of the core; r2 is the radius of each deflector; r1/r2 is between 0.5 and 2.5; phi is the angle of the tangents at the intersection of the deflectors and is between 0* and 180*; Beta is the inside angle formed by tangents to the core wall and deflector surface at the point of their intersection and is between 20* and 100*; and Alpha is the angle made by the outermost intercept of one deflector with the core wall and the outermost intercept of the other deflector with the core wall.
Claim 2
Dependent Claim
52 words
A reactor of claim 2 wherein the deflector means are partial cylinders having end walls, each partial cylinder being defined by the intersection of a right circular cylinder by a plane parallel to its axis, Alpha is about 139*, Beta is about 45*, phi is about 70* and r1/r2 is about 2.2.
Claim 3
Dependent Claim
15 words
A reactor of claim 3 wherein the end walls of each partial cylinder are straight.
Claim 4
Dependent Claim
60 words
A reactor of claim 1 wherein a single gas deflector means is positioned within the core across from and in concave relationship to each exhaust gas inlet to the core, the distance between the deflector surface and a hypothetical circular extension of the core wall at their point of greatest separation being at least 4/10 the radius of the deflector.
Claim 5
Dependent Claim
117 words
A reactor of claim 5 wherein the gas deflector means is a partial cylinder having end walls, said partial cylinder being defined by the intersection of a right circular cylinder by a plane parallel to its axis, the angle Alpha , made by the outermost intercept of one side of the deflector with the core wall and the outermost intercept of the opposite side of the deflector with the core wall is about 33*, the inside angle Beta formed by the tangents at the point of intersection of the deflector and the core wall is about 50*, and the ratio of the radius of the core, r1, to the radius of the deflector, r2, is about 1.8.
Claim 6
Dependent Claim
15 words
A reActor of claim 6 wherein the end walls of the partial cylinder are straight.
Claim 7
Dependent Claim
20 words
A reactor of claim 1 wherein the inlet ports are conduits which terminate approximately at the axis of the core.
Claim 8
Dependent Claim
31 words
A reactor of claim 8 wherein the inlet port conduits are constricted and contain means for directing a part of the incoming gas stream axially toward the center of the core.
Claim 9
Dependent Claim
43 words
A reactor of claim 9 wherein the means for directing a part of the incoming gas stream consists of a slot across the conduit opening toward the core center and a tongue extending into the conduit from the downstream side of the slot.
Claim 10
Dependent Claim
25 words
A reactor of claim 8 wherein the inlet port conduits are constricted and direct a substantial part of the incoming gas against the deflector surface.
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |