Patent US3745939A successfully refreshed from Google Patents.
US3745939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Effluent cleaner for trash-burning
Assignee: Individual
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Filing: 1971-11-10
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Granted: 1973-07-17
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Expires: 1991-11-10
Abstract
Abstract Located adjacent to a trash-burning building, such as a building in which flammable material is burned from automobiles, effluent cleaning apparatus includes a secondary furnace for burning combustible gases and a tortuous horizontal flue, a water pit in a reversing flow path for collecting particles, washing sprays within the water pit and within a discharge stack, and a mechanical filter in the discharge stack.
Inventors
- 👤 W Allbritton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:11
CPC Classifications
F; F23; F23G; F23G7/00; F23G7/06; F23G7/061; F23G7/065; F23J; F23J15/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
181 words
For use with a trash-burning building defining a primary combustion chamber and including duct means for carrying gaseous effluent from the building, effluent cleaning apparatus comprising: a secondary furnace comprising housing means having an inlet at one end, for communication with said duct means, and an outlet at the other end; said housing defining a combustion chamber at the inlet end, having disposed therein a flame producing burner, and means defining a laterally directed tortuous path from said combustion chamber to said furnace outlet; means defining a water pit disposed adjacent to said secondary furnace; means maintaining the water level in said pit to define a lateral effluent path above the water; a diving flue communicating said furnace and said water pit, effluent path for directing effluent downwardly into said water pit; vertical stack means supported above said water pit and communicating with said water pit effluent path for discharging the effluent to the atmosphere; and a plurality of liquid spray nozzles disposed within said stack means for washing the effluent flowing from said water pit upwardly through said stack means.
Claim 2
Dependent Claim
181 words
For use with a trash-burning building defining a primary combustion chamber and including duct means for carrying gaseous effluent from the building, effluent cleaning apparatus comprising: a secondary furnace comprising housing means having an inlet at one end, for communication with said duct means, and an outlet at the other end; said housing defining a combustion chamber at the inlet end, having disposed therein a flame producing burner, and means defining a laterally directed tortuous path from said combustion chamber to said furnace outlet; means defining a water pit disposed adjacent to said secondary furnace; means maintaining the water level in said pit to define a lateral effluent path above the water; a diving flue communicating said furnace and said water pit, effluent path for directing effluent downwardly into said water pit; vertical stack means supported above said water pit and communicating with said water pit effluent path for discharging the effluent to the atmosphere; and a plurality of liquid spray nozzles disposed within said stack means for washing the effluent flowing from said water pit upwardly through said stack means.
Claim 3
Dependent Claim
81 words
Effluent cleaning apparatus as set forth in claim 1 wherein said tortuous path in said furnace housing is provided by a first central baffle defining one wall of said combustion chamber and flow paths adjacent to the side walls of the furnace housing, a pair of baffles located in spaced relation one adjacent to each side wall of the burner housing and defining a central flow passage, and a second central baffle defining flow passages adjacent to the housing side walls.
Claim 4
Dependent Claim
18 words
Effluent cleaning apparatus as set forth in claim 1 including a gas burner disposed in said combustion chamber.
Claim 5
Dependent Claim
46 words
Effluent cleaning apparatus as set forth in claim 1 wherein said diving flue and said stack means are disposed adjacent to each other opening to said water pit effluent path; said water pit defining a flow reversing chamber between said diving flue and said stack means.
Claim 6
Dependent Claim
29 words
Effluent cleaning apparatus as set forth in claim 1 including downwardly directed water spray means in said water pit for washing the effluent flowing through said lateral flow path.
Claim 7
Dependent Claim
30 words
Effluent cleaning apparatus as set forth in claim 1 including filter means disposed adjacent to the upper end of said stack means for collecting suspended particles remaining in the effluent.
Claim 8
Dependent Claim
42 words
Effluent cleaning apparatus as set forth in claim 5 including fluid pump means having a suction inlet coMmunicating with the water in said water pit, and having its outlet communicating with said nozzle means in said stack and in said water pit.
Claim 9
Dependent Claim
34 words
Effluent cleaning apparatus as set forth in claim 1 including fluid pump means having its suction inlet disposed adjacent to the bottom of said water pit for removing collected sludge from said water pit.
Claim 10
Dependent Claim
37 words
Effluent cleaning apparatus as set forth in claim 1 including fluid pump means having a suction inlet communicating with the water in said water pit, and having its outlet communicating with said nozzle means in said stack.
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |