Patent US3841828A successfully refreshed from Google Patents.
US3841828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust gas treatment system
Assignee: Liberty Industries Inc
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Filing: 1972-02-08
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Granted: 1974-10-15
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Expires: 1992-02-08
Abstract
Abstract A system for treating virus contaminated exhaust gas prior to discharge into the atmosphere couples high efficiency filtration with in-line combustion of all exhaust gas prior to discharge. The filtration prohibits the passage of exhaust particles larger than about one-half micron while the in-line combustion requires dispersed entrainment of all filtered exhaust gas within an elongated flame zone prior to release to the atmosphere.
Inventors
- 👤 R Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:09
CPC Classifications
B; B01; B01D; B01D50/00; F; F23; F23G; F23G7/00; F23G7/06; F23G7/061; F23G7/065; Y; Y10; Y10S; Y10S55/00; Y10S55/29
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
154 words
In a system for treating virus contaminated exhaust gas prior to discharge into the atmosphere, the combination including a work station having a high efficiency particulate air filter; a combustion chamber spaced from the work station, said chamber having a diverging flame zone; a conduit connecting the work station with the combustion chamber for the passage of all exhaust gas through said chamber; exhaust gas drive means for drawing said exhaust gas through the conduit and toward the combustion chamber, said combustion chamber including a fuel discharge port and an associated baffle for confining all the exhaust gas conveyed through the conduit and injecting the confined gas into the flame zone of the combustion chamber to elongate the flame downstream within the combustion chamber to effect the deactivation of all entrained viral particles in the exhaust gas; and effluent discharge means connected to said combustion chamber for discharging the effluent from said combustion chamber.
Claim 2
Dependent Claim
154 words
In a system for treating virus contaminated exhaust gas prior to discharge into the atmosphere, the combination including a work station having a high efficiency particulate air filter; a combustion chamber spaced from the work station, said chamber having a diverging flame zone; a conduit connecting the work station with the combustion chamber for the passage of all exhaust gas through said chamber; exhaust gas drive means for drawing said exhaust gas through the conduit and toward the combustion chamber, said combustion chamber including a fuel discharge port and an associated baffle for confining all the exhaust gas conveyed through the conduit and injecting the confined gas into the flame zone of the combustion chamber to elongate the flame downstream within the combustion chamber to effect the deactivation of all entrained viral particles in the exhaust gas; and effluent discharge means connected to said combustion chamber for discharging the effluent from said combustion chamber.
Claim 3
Dependent Claim
22 words
The system of claim 1 wherein the filter is capable of retaining particles having a size of about 0.3 micron and larger.
Claim 4
Dependent Claim
29 words
The system of claim 1 wherein the exhaust gas drive means includes a blower adjacent and upstream of the combustion chamber for driving the exhaust gas into the chamber.
Claim 5
Dependent Claim
65 words
The system of claim 1 wherein the baffle includes barrier means for preventing flow of the exhaust gas downstream of said combustion chamber, the baffle means including a plurality of gas injection ports spaced from the fuel discharge port and providing communication between the conduit and the combustion chamber for directing all of the exhaust gas confined by the barrier means into the combustion chamber.
Claim 6
Dependent Claim
43 words
The system of claim 1 wherein the baffle means includes a pair of apertured baffle plates flaring outwardly from the fuel discharge port and facilitating the formation of an elongated flame pattern within the combustion chamber extending downstream from the fuel discharge port.
Claim 7
Dependent Claim
37 words
The system of claim 1 including an enclosed work area provided with gas recirculating means and an exhaust port associated with the filter for exhausting only a minor proportion of the recirculating gas within the work area.
Claim 8
Dependent Claim
50 words
The system of claim 1 including an enclosed work area having a work surface, an absolute filter for filtering a major proportion of the gas passing over the work surface, an exhaust port and exhaust gas drive means for moving the gas from the work surface toward the exhaust port.
References Cited (Backward Citations)
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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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |