US3316079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel slag handling system
Assignee: International Steel Slag Corp
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Filing: 1966-05-18
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Granted: 1967-04-25
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Expires: 1986-05-18
Abstract
No abstract record available.
Inventors
- 👤 John J Grady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:47
CPC Classifications
C; C21; C21B; C21B3/00; C21B3/04; C21B3/06; C21B3/08; C04; C04B; C04B5/00; C21B2400/00; C21B2400/02; C21B2400/022; C21B2400/024; C21B2400/05; C21B2400/066; C21B2400/072
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
AN APPARATUS FOR HANDLING SLAG FROM AN OPEN HEARTH FURNACE HAVING AT LEAST ONE CHARGING DOOR AND LOCATED IN A FURNACE BUILDING INCULDING A CHARGING FLOOR AND KITCHEN BELOW THE CHARGING FLOOR ON ONE SIDE OF THE FURNACE SAID APPARATUS COMPRISING: GRANULATOR MEANS IN SAID KITHCEN INCLUDING MEANS FOR SUBJECTING MOLTEN SLAG TRANSFERRED FROM THE FURNACE TO A COOLING MEDIUM IN SUFFICIENT QUANTITY TO GRANULATE THE MOLTEN SLAG INTO RELATIVELY SMALL PIECES OF FERROUS AND NON-FERROUS MATERIALS; AN OPENING IN SAID CHARGING FLOOR BELOW SAID CHARGING DOOR THROUGH WHICH FRONT FLUSHED SLAG MAY PASS; A MOVABLE SLAG RUNNER HAVING A FIRST PORTION MOVABLY MOUNTED FOR FEEDING SLAG TO SAID GRANULATOR MEANS AND A SECOND PORTION DISPOSABLE BELOW SAID OPENING IN THE CHARGING FLOOR FOR RECEIVING SLAG FRONT FLUSHED FROM SAID FURNACE THROUGH SAID OPENING; MEANS FOR LATERALLY MOVING SAID SECOND PORTION OF THE SLAG RUNNER TO DISPOSE SAID SECOND RUNNER PORTION BELOW SAID CHARGING FLOOR OPENING SO THAT SLAG FRONT FLUSHED FROM THE FURNACE THERETHROUGH IS TRANSFERRED TO SAID GRANULATOR MEANS SAID MEANS ALSO SERVING TO DISPLACE SAID SLAG RUNNER A SUFFICIENT DISTANCE FROM BELOW SAID CHARGING FLOOR OPENING SO THAT SLAG WHICH IS FLUSHED THERETHROUGH IS NOT CONVEYED TO SAID GRANULATOR MEANS.
Claim 2
Independent Claim
203 words
AN APPARATUS FOR HANDLING SLAG FROM AN OPEN HEARTH FURNACE HAVING AT LEAST ONE CHARGING DOOR AND LOCATED IN A FURNACE BUILDING INCULDING A CHARGING FLOOR AND KITCHEN BELOW THE CHARGING FLOOR ON ONE SIDE OF THE FURNACE SAID APPARATUS COMPRISING: GRANULATOR MEANS IN SAID KITHCEN INCLUDING MEANS FOR SUBJECTING MOLTEN SLAG TRANSFERRED FROM THE FURNACE TO A COOLING MEDIUM IN SUFFICIENT QUANTITY TO GRANULATE THE MOLTEN SLAG INTO RELATIVELY SMALL PIECES OF FERROUS AND NON-FERROUS MATERIALS; AN OPENING IN SAID CHARGING FLOOR BELOW SAID CHARGING DOOR THROUGH WHICH FRONT FLUSHED SLAG MAY PASS; A MOVABLE SLAG RUNNER HAVING A FIRST PORTION MOVABLY MOUNTED FOR FEEDING SLAG TO SAID GRANULATOR MEANS AND A SECOND PORTION DISPOSABLE BELOW SAID OPENING IN THE CHARGING FLOOR FOR RECEIVING SLAG FRONT FLUSHED FROM SAID FURNACE THROUGH SAID OPENING; MEANS FOR LATERALLY MOVING SAID SECOND PORTION OF THE SLAG RUNNER TO DISPOSE SAID SECOND RUNNER PORTION BELOW SAID CHARGING FLOOR OPENING SO THAT SLAG FRONT FLUSHED FROM THE FURNACE THERETHROUGH IS TRANSFERRED TO SAID GRANULATOR MEANS SAID MEANS ALSO SERVING TO DISPLACE SAID SLAG RUNNER A SUFFICIENT DISTANCE FROM BELOW SAID CHARGING FLOOR OPENING SO THAT SLAG WHICH IS FLUSHED THERETHROUGH IS NOT CONVEYED TO SAID GRANULATOR MEANS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |