US3365187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Runner system for blast furnace
Assignee: Bethlehem Steel Corp
•
Filing: 1965-10-20
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Granted: 1968-01-23
•
Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 George L French
- 👤 Thomas E James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:44
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
THE IMPROVEMENT OF CASTING APPARATUS FOR A BLAST FURNACE HAVING TWO TAP HOLES, COMPRISING: (A) A PAIR OF SPACED MAIN IRON RUNNER UPPER SECTIONS, EACH SAID SECTION EXTENDING DOWNWARDLY FROM A FURNACE TAP HOLE, (B) A PAIR OF SPACED MAIN IRON RUNNER INTERMEDIATE SECTIONS, EACH SAID INTERMEDIATE SECTION CONNECTED TO AND EXTENDING DOWNWARDLY FROM THE LOWER END OF AN UPPER SECTION, (C) A PAIR OF CONVERGING MAIN IRON RUNNER LOWER SECTIONS INTERSECTING ADJACENT THE LOWER ENDS THEREOF, EACH SAID LOWER SECTION CONNECTED TO AND EXTENDING DOWNWARDLY FROM THE LOWER END OF AN INTERMEDIATE SECTION AND HAVING (1) A FIRST BRANCH IRON RUNNER EXTENDING DOWNWARDLY THEREFROM ABOVE THE INTERSECTION OF SAID LOWER SECTIONS, (2) A SECOND BRANCH IRON RUNNER EXTENDING DOWNWARDLY FROM THE LOWER END THEREOF.
Claim 2
Dependent Claim
125 words
THE IMPROVEMENT OF CASTING APPARATUS FOR A BLAST FURNACE HAVING TWO TAP HOLES, COMPRISING: (A) A PAIR OF SPACED MAIN IRON RUNNER UPPER SECTIONS, EACH SAID SECTION EXTENDING DOWNWARDLY FROM A FURNACE TAP HOLE, (B) A PAIR OF SPACED MAIN IRON RUNNER INTERMEDIATE SECTIONS, EACH SAID INTERMEDIATE SECTION CONNECTED TO AND EXTENDING DOWNWARDLY FROM THE LOWER END OF AN UPPER SECTION, (C) A PAIR OF CONVERGING MAIN IRON RUNNER LOWER SECTIONS INTERSECTING ADJACENT THE LOWER ENDS THEREOF, EACH SAID LOWER SECTION CONNECTED TO AND EXTENDING DOWNWARDLY FROM THE LOWER END OF AN INTERMEDIATE SECTION AND HAVING (1) A FIRST BRANCH IRON RUNNER EXTENDING DOWNWARDLY THEREFROM ABOVE THE INTERSECTION OF SAID LOWER SECTIONS, (2) A SECOND BRANCH IRON RUNNER EXTENDING DOWNWARDLY FROM THE LOWER END THEREOF.
References Cited (Backward Citations)
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US2805142A
Cited
US2762096A
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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) | 1971-01-22 | 1971-07-24 | 1972-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-22 | 1975-07-24 | 1976-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-22 | 1979-07-24 | 1980-01-23 | $7700.00 | Window Closed / Lapsed |