Patent US2985574A successfully refreshed from Google Patents.
Patent US3552331A successfully refreshed from Google Patents.
US3552331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for burning of materials, especially of waste oils, oils sludges and chemical waste products difficult to burn
Assignee: Individual
•
Filing: 1968-09-25
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Granted: 1971-01-05
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Expires: 1988-09-25
Abstract
Abstract A device for burning difficult burnable materials having two combustion chambers connected with each other, each having a coordinated air supply wherein the second chamber has a greater volume than the first chamber.
Inventors
- 👤 Peter Widdig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:33
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/08; F23G5/14; F23G7/00; F23G7/05; Y; Y10; Y10S; Y10S588/00; Y10S588/90
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
147 words
A device for burning materials difficult to burn comprising two combustion chambers connected with one another each having its own coordinated supply of pressurized air, the second combustion chamber having a volume equal to or greater that the first combustion chamber, said first combustion chamber having a circular cross section with a flat bottom and being stepwise enlarged at about half of its length and at the end of said first combustion chamber air supply nozzles being arranged which operate to force the combustion gases into said second combustion chamber arranged at a right angle thereto and having a nearly rectangular cross section, the bottom of said second combustion chamber being provided at about half of its length with an upwardly directed step while in the roof of said second combustion chamber is provided an upwardly extending chimney flue and another downwardly directed step before said flue.
Claim 2
Dependent Claim
41 words
A device according to claim 6 wherein before said upwardly extending chimney flue at the end of said second combustion chamber, there is provided a further burner for the combustion of easily burnable liquid fuels having a coordinated air supply nozzle.
Claim 3
Independent Claim
59 words
A device for burning materials difficult to burn, comprising a first combustion chamber, a burner arranged at the front side of said first combustion chamber, a plurality of spaced supply nozzles coaxially arranged, and surrounding said burner on the same front side of said first combustion chamber for the introduction of pressurized air arranged substantially on a circular line.
Claim 4
Dependent Claim
34 words
A device according to claim 4, further including a nozzle for the addition of said materials difficult to burn arranged in the space between said burner and said air supply nozzles surrounding said burner.
Claim 5
Dependent Claim
46 words
A device according to claim 4, further including a second combustion chamber connected with said first combustion chamber, a plurality of further air supply nozzles at the end of said first combustion chamber, said further air supply nozzles being obliquely directed toward said second combustion chamber.
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |