US3680503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incinerator
Assignee: Individual
•
Filing: 1970-09-29
•
Granted: 1972-08-01
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Expires: 1990-09-29
Abstract
Abstract An incinerator consists of a vertical shaft, a tube for the supply of combustion air extending into the shaft from the top of the incinerator, an exhaust gas tube extending coaxially inside the combustion air supply tube. The material to be combusted is supplied from the top of the shaft. The ashes descend through the shaft onto a rotary ash platform. Combustion air is also supplied to the ashes on the ash platform, penetrating through said ashes up into the burning material in the shaft.
Inventors
- 👤 Gunnar Danielsson
- 👤 Knut Ludvig Winquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:07
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/24; F23G5/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
145 words
Incinerator, particularly a refuse incinerator, comprising a furnace shaft; an opening at the top of the shaft for introduction of material to be burned; a rotatable ash platform at the bottom of the shaft; means for removing ash from the ash platform; a combustive air supply pipe extending vertically downwardly into the shaft, said combustive air supply pipe forming an obstacle to said material so as to form an open space in the material below the lower end of the combustive air supply pipe; an exhaust gas pipe extending inside of and coaxially with the combustive air supply pipe; there being an annular space between said two coaxial pipes; means for supplying combustive air to said open space through said annular space; means for supplying combustive air through any ash resting on the ash platform; and means for vertically displaceably mounting said two coaxial pipes.
Claim 2
Dependent Claim
145 words
Incinerator, particularly a refuse incinerator, comprising a furnace shaft; an opening at the top of the shaft for introduction of material to be burned; a rotatable ash platform at the bottom of the shaft; means for removing ash from the ash platform; a combustive air supply pipe extending vertically downwardly into the shaft, said combustive air supply pipe forming an obstacle to said material so as to form an open space in the material below the lower end of the combustive air supply pipe; an exhaust gas pipe extending inside of and coaxially with the combustive air supply pipe; there being an annular space between said two coaxial pipes; means for supplying combustive air to said open space through said annular space; means for supplying combustive air through any ash resting on the ash platform; and means for vertically displaceably mounting said two coaxial pipes.
Claim 3
Dependent Claim
40 words
Incinerator according to claim 1, provided with means for the supply of additional fuel, characterized in that at least one pipe (31) for the supply of gas is arranged at the level of the ash resting on the ash platform.
Claim 4
Dependent Claim
49 words
Incinerator according to claim 1, provided with means for the supply of additional fuel, characterized in that at least one pipe (31a) for the supply of liquid combustible material, for example waste oil, is arranged to pass through the furnace wall at a higher level than the space (13).
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |