US3171877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for continuous steel-making
Assignee: DEPARTMENT OF FUEL TECHNOLOGY
•
Filing: 1963-03-19
•
Granted: 1965-03-02
•
Expires: 1983-03-19
Abstract
No abstract record available.
Inventors
- 👤 Meredith W Thring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:44
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/56; C21C5/567; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
APPARATUS FOR CONTINUOUS STEEL-MAKING COMPRISING AN INCLINED FEED CHANNEL FOR THE RECEPTION OF THE ESSENTIAL METALLIC CONTENT OF THE STEEL TO BE PRODUCED, A REFINING HEARTH TO WHICH THE CHANNEL DISCHARGES, THE HEARTH EXTENDING IN CONTINUATION OF THE CHANNEL, A TRANSVERSE PIVOTAL MOUNTING FOR THE REFINING HEARTH, MEANS FOR TILTING THE HEARTH ABOUT ITS PIVOTAL MOUNTING, AT LEAST ONE TAPPING HOLE AT THE END OF THE HEARTH, REMOTE FROM THE CHANNEL, TILTING OF THE HEARTH IN ONE DIRECTION OR THE OTHER BRINGING SUCH HOLE TO SUBMERGED AND EXPOSED POSITIONS RESPECTIVELY, AN ARCH ENCLOSING THE HEARTH AND CONTINUING OVER THE CHANNEL, AT LEAST ONE BURNER AT THE TAPPING HOLE END OF THE HEARTH AND AT LEAST ONE BURNER NEAR THE BOTTOM END OF THE CHANNEL, AND AN OUTLET FROM THE TOP OF THE FEED CHANNEL FOR EXTRACTION OF WASTE GASES FROM THE COMBUSTION GASES THAT ARE THUS CAUSED TO PROCEED TO COUNTERFLOW ALONG THE HEARTH AND THE CHANNEL IN TURN FROM THE BURNERS.
Claim 2
Dependent Claim
162 words
APPARATUS FOR CONTINUOUS STEEL-MAKING COMPRISING AN INCLINED FEED CHANNEL FOR THE RECEPTION OF THE ESSENTIAL METALLIC CONTENT OF THE STEEL TO BE PRODUCED, A REFINING HEARTH TO WHICH THE CHANNEL DISCHARGES, THE HEARTH EXTENDING IN CONTINUATION OF THE CHANNEL, A TRANSVERSE PIVOTAL MOUNTING FOR THE REFINING HEARTH, MEANS FOR TILTING THE HEARTH ABOUT ITS PIVOTAL MOUNTING, AT LEAST ONE TAPPING HOLE AT THE END OF THE HEARTH, REMOTE FROM THE CHANNEL, TILTING OF THE HEARTH IN ONE DIRECTION OR THE OTHER BRINGING SUCH HOLE TO SUBMERGED AND EXPOSED POSITIONS RESPECTIVELY, AN ARCH ENCLOSING THE HEARTH AND CONTINUING OVER THE CHANNEL, AT LEAST ONE BURNER AT THE TAPPING HOLE END OF THE HEARTH AND AT LEAST ONE BURNER NEAR THE BOTTOM END OF THE CHANNEL, AND AN OUTLET FROM THE TOP OF THE FEED CHANNEL FOR EXTRACTION OF WASTE GASES FROM THE COMBUSTION GASES THAT ARE THUS CAUSED TO PROCEED TO COUNTERFLOW ALONG THE HEARTH AND THE CHANNEL IN TURN FROM THE BURNERS.
References Cited (Backward Citations)
US2041844A
Cited
US2534825A
Cited
US2637286A
Cited
US2587727A
Cited
US2606015A
Cited
US2948030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |