Patent US3179074A successfully refreshed from Google Patents.
US3179074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclone furnace
Assignee: Babcock and Wilcox Co
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Filing: 1962-02-21
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Granted: 1965-04-20
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Expires: 1982-02-21
Abstract
No abstract record available.
Inventors
- 👤 Merle M Clark
- 👤 Nicholas P Rusanowsky
- 👤 Warnie L Sage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:08
CPC Classifications
F; F23; F23C; F23C3/00; F23C3/006; F23C3/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A CYCLONE FURNACE HAVING WALLS DEFINING A COMBUSTION CHAMBER OF SUBSTANTIALLY CIRCULAR CROSS-SECTIONS, FLUID COOLING MEANS FOR SAID WALLS, MEANS FORMING A RESTRICTED GAS OUTLET AT ONE END OF SAID CHAMBER, MEANS FORMING A SUBSTANTIALLY UNOBSTRUCTED AIR AND FUEL INLET CHAMBER OF SUBSTANTIALLY CIRCULAR CROSS-SECTION AMD OF SMALLER DIAMETER THAN AND OPENING AT ONE END INTO THE OPPOSITE END OF SAID COMBUSTION CHAMBER, MEANS FOR INTRODUCING A LOW VELOCITY STREAM OF SLAG-FORMING PARTICLE FUEL INTO SAID AIR AND FUEL INLET CHAMBER AT A POSITION BETWEEN THE OPPOSITE ENDS THEREOF, MEANS FOR INTRODUCING A HIGH VELOCITY STREAM OF PRIMARY AIR TANGENTIALLY INTO SAID AIR FUEL INLET CHAMBER AT A LOCATION BETWEEN THE OPPOSITE ENDS THEREOF AND SEPARATE FROM THE POINT OF FUEL ENTRY AND EFFECTING A
Claim 2
Dependent Claim
125 words
A CYCLONE FURNACE HAVING WALLS DEFINING A COMBUSTION CHAMBER OF SUBSTANTIALLY CIRCULAR CROSS-SECTIONS, FLUID COOLING MEANS FOR SAID WALLS, MEANS FORMING A RESTRICTED GAS OUTLET AT ONE END OF SAID CHAMBER, MEANS FORMING A SUBSTANTIALLY UNOBSTRUCTED AIR AND FUEL INLET CHAMBER OF SUBSTANTIALLY CIRCULAR CROSS-SECTION AMD OF SMALLER DIAMETER THAN AND OPENING AT ONE END INTO THE OPPOSITE END OF SAID COMBUSTION CHAMBER, MEANS FOR INTRODUCING A LOW VELOCITY STREAM OF SLAG-FORMING PARTICLE FUEL INTO SAID AIR AND FUEL INLET CHAMBER AT A POSITION BETWEEN THE OPPOSITE ENDS THEREOF, MEANS FOR INTRODUCING A HIGH VELOCITY STREAM OF PRIMARY AIR TANGENTIALLY INTO SAID AIR FUEL INLET CHAMBER AT A LOCATION BETWEEN THE OPPOSITE ENDS THEREOF AND SEPARATE FROM THE POINT OF FUEL ENTRY AND EFFECTING A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |