Patent US3218996A successfully refreshed from Google Patents.
US3218996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refuse incinerator
Assignee: Licentia Ekman and Brundin Firma
•
Filing: 1963-01-21
•
Granted: 1965-11-23
•
Expires: 1983-01-21
Abstract
No abstract record available.
Inventors
- 👤 Wernheim Sven Oskar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:25
CPC Classifications
F; F23; F23L; F23L15/00; B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/241; B60T13/246; F23G; F23G5/00; F23G5/08; F23G5/14; F23G5/16; Y; Y02; Y02E; Y02E20/00; Y02E20/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
207 words
AN INCINERATOR FOR COMBUSTION OF GARBAGE AND REFUSE MATERIAL COMPRISING A FIRST SHAFT FOR THE REFUSE MATERIAL INCLUDING A FIRST GRATE AND A FIRST ASH-PIT, A SECOND SHAFT FOR HIGH GRADE SOLID FUEL INCLUDING A SECOND GRATE AND A SECOND ASH-PIT, SAID FIRST AND SECOND SHAFTS BEING SEPARATED BY A COMMON INTERMEDIATE WALL AND THE SPACES DEFINED BY SAID FIRST AND SECOND ASH-PITS BEING SEPARATED BY A SEPARATING WALL, SAID FIRST AND SECOND GRATES HAVING THEIR ADJACENT ENDS LOCATED AT SUBSTANTIALLY THE SAME LEVEL AND SAID SECOND GRATE BEING INCLINED TO EXTEND OBLIQUELY UPWARD FROM SAID INTERMEDIATE WALL, SAID FIRST AND SECOND SHAFTS COMMUNICATING WITH EACH OTHER THROUGH AN OPENING IN SAID INTERMEDIATE WALL LOCATED ADJACENT SAID GRATES TO PERMIT AN INCLINED INCANDESCENT FUEL BED IN SAID SECOND SHAFT TO MEET A REFUSE MATERIAL BED IN SAID FIRST SHAFT THROUGH SAID OPENING AND TO PERMIT VAPORS AND GASES FROM SUCH REFUSE MATERIAL TO PASS THROUGH SAID OPENING AND SUCH INCANDESCENT FUEL BED, AT LEAST ONE DUCT INTERCONNECTING THE UPPER END PORTION OF SAID FIRST SHAFT WITH THE SPACE DEFINED BY SAID SECOND ASH-PIT BELOW SAID FUEL GRATE, SAID FIRST SHAFT HAVING AN AIR INLET FOR COMBUSTION AIR AND SAID SECOND SHAFT HAVING AN OUTLET FOR FLUE GASES.
Claim 2
Dependent Claim
207 words
AN INCINERATOR FOR COMBUSTION OF GARBAGE AND REFUSE MATERIAL COMPRISING A FIRST SHAFT FOR THE REFUSE MATERIAL INCLUDING A FIRST GRATE AND A FIRST ASH-PIT, A SECOND SHAFT FOR HIGH GRADE SOLID FUEL INCLUDING A SECOND GRATE AND A SECOND ASH-PIT, SAID FIRST AND SECOND SHAFTS BEING SEPARATED BY A COMMON INTERMEDIATE WALL AND THE SPACES DEFINED BY SAID FIRST AND SECOND ASH-PITS BEING SEPARATED BY A SEPARATING WALL, SAID FIRST AND SECOND GRATES HAVING THEIR ADJACENT ENDS LOCATED AT SUBSTANTIALLY THE SAME LEVEL AND SAID SECOND GRATE BEING INCLINED TO EXTEND OBLIQUELY UPWARD FROM SAID INTERMEDIATE WALL, SAID FIRST AND SECOND SHAFTS COMMUNICATING WITH EACH OTHER THROUGH AN OPENING IN SAID INTERMEDIATE WALL LOCATED ADJACENT SAID GRATES TO PERMIT AN INCLINED INCANDESCENT FUEL BED IN SAID SECOND SHAFT TO MEET A REFUSE MATERIAL BED IN SAID FIRST SHAFT THROUGH SAID OPENING AND TO PERMIT VAPORS AND GASES FROM SUCH REFUSE MATERIAL TO PASS THROUGH SAID OPENING AND SUCH INCANDESCENT FUEL BED, AT LEAST ONE DUCT INTERCONNECTING THE UPPER END PORTION OF SAID FIRST SHAFT WITH THE SPACE DEFINED BY SAID SECOND ASH-PIT BELOW SAID FUEL GRATE, SAID FIRST SHAFT HAVING AN AIR INLET FOR COMBUSTION AIR AND SAID SECOND SHAFT HAVING AN OUTLET FOR FLUE GASES.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |