Patent US3841208A successfully refreshed from Google Patents.
US3841208A
Expired / Lapsed
US
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Apparatus for dispersing effluent gas into the atmosphere
Assignee: Dow Chemical Co
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Filing: 1973-08-10
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Granted: 1974-10-15
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Expires: 1993-08-10
Abstract
Abstract Harmful polluting materials, such as sulfur dioxide, nitrogen oxides, and fly ash, are carried into the atmosphere in stack gas effluents. An apparatus is disclosed which is useful for dispersing the stack gas into the atmosphere. The dispersing apparatus comprises basically a rotatable fan unit, which is mounted on a platform above the outlet of a vertical stack. Waste gas being discharged from the stack is thus propelled upwardly by the fan a substantial distance into the atmosphere. Dispersing the effluent gas in this manner reduces the concentration of the polluting materials in the atmosphere to a safe level.
Inventors
- 👤 G Knox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:47
CPC Classifications
F; F23; F23L; F23L17/00; F23L17/005
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
158 words
Apparatus for dispersing effluent gas into the atmosphere from the outlet of a vertical stack, which includes the combination of: a support structure generally defined by several upstanding leg members and a platform having an opening therein, in which the lower end of each leg member is anchored adjacent to the base of the stack, the upper end of each leg member extends above the stack outlet, the platform is fastened to the upper ends of the leg members, such that the platform is positioned above and horizontal to the stack outlet, and the platform opening is aligned with the stack outlet, a rotatable fan unit which is mounted on the platform above the opening and in alignment therewith, and means enclosing the fan for propelling the effluent vertically upwardly from the stack outlet past the apparatus to thereby disperse the effluent into the atmosphere, a drive means operatively connected to a fan unit, for rotating the fan.
Claim 2
Dependent Claim
158 words
Apparatus for dispersing effluent gas into the atmosphere from the outlet of a vertical stack, which includes the combination of: a support structure generally defined by several upstanding leg members and a platform having an opening therein, in which the lower end of each leg member is anchored adjacent to the base of the stack, the upper end of each leg member extends above the stack outlet, the platform is fastened to the upper ends of the leg members, such that the platform is positioned above and horizontal to the stack outlet, and the platform opening is aligned with the stack outlet, a rotatable fan unit which is mounted on the platform above the opening and in alignment therewith, and means enclosing the fan for propelling the effluent vertically upwardly from the stack outlet past the apparatus to thereby disperse the effluent into the atmosphere, a drive means operatively connected to a fan unit, for rotating the fan.
Claim 3
Dependent Claim
24 words
The apparatus of claim 1 in which the drive means is an electric motor, and the motor is connected to an electrical power source.
Claim 4
Dependent Claim
20 words
The apparatus of claim 2 in which the electric motor is mounted on the platform adjacent to the fan unit.
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) | 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 |