US3253723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for charging scrap
Assignee: Calderon Automation Inc
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Filing: 1964-07-29
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Granted: 1966-05-31
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Expires: 1984-07-29
Abstract
No abstract record available.
Inventors
- 👤 Calderon Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:02
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/0025; F27D3/0031
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
122 words
IN A METHOD OF FEEDING SCRAP TO A STEEL MAKING FURNACE HAVING A RESTRICTED CHARGING APERTURE, THE STEPS OF PROGRESSIVELY DROPPING SCRAP WITH INCREASING KINETIC ENERGY ON THE INLET ENF OF A CHUTE FOR FLOW THERETHROUGH TO AN EXIT END, ORIENTING SAID SCRAP INTO ALIGNMENT WITH THE DIRECTION OF FLOW BY IMPACTING IT TO THE CHUTE WITH SUFFICIENT KINETIC ENERGY TO CAUSE THOSE SCRAP PORTIONS HAVING A TENDENCY TO JAM THEREIN TO TURN AND TUMBLE DUE TO INTERFERENCE BETWEEN THE SCRAP AND THE CHUTE WALLS AND BETWEEN VARIOUS PORTIONS OF THE SCRAP, DISCHARGING THE ORIENTED SCRAP FROM THE CHUTE EXIT END INTO THE FURNACE, AND DISPERSING THE SCRAP IN THE FURNACE IN ACCORDANCE WITH THE KINETIC ENERGY IMPARTED TO PROGRESSIVE PORTIONS THEREOF.
Claim 2
Dependent Claim
122 words
IN A METHOD OF FEEDING SCRAP TO A STEEL MAKING FURNACE HAVING A RESTRICTED CHARGING APERTURE, THE STEPS OF PROGRESSIVELY DROPPING SCRAP WITH INCREASING KINETIC ENERGY ON THE INLET ENF OF A CHUTE FOR FLOW THERETHROUGH TO AN EXIT END, ORIENTING SAID SCRAP INTO ALIGNMENT WITH THE DIRECTION OF FLOW BY IMPACTING IT TO THE CHUTE WITH SUFFICIENT KINETIC ENERGY TO CAUSE THOSE SCRAP PORTIONS HAVING A TENDENCY TO JAM THEREIN TO TURN AND TUMBLE DUE TO INTERFERENCE BETWEEN THE SCRAP AND THE CHUTE WALLS AND BETWEEN VARIOUS PORTIONS OF THE SCRAP, DISCHARGING THE ORIENTED SCRAP FROM THE CHUTE EXIT END INTO THE FURNACE, AND DISPERSING THE SCRAP IN THE FURNACE IN ACCORDANCE WITH THE KINETIC ENERGY IMPARTED TO PROGRESSIVE PORTIONS THEREOF.
Claim 3
Dependent Claim
26 words
IN AN APPARATUS FOR RAPIDLY CHARGING SCRAP THROUGH A CHARGING APERTURE INTO A STEEL MAKING FURNACE, AN OPEN TOPPED CHUTE HAVING SPACED ANGULARLY RELATED INLET AND
Claim 4
Dependent Claim
26 words
IN AN APPARATUS FOR RAPIDLY CHARGING SCRAP THROUGH A CHARGING APERTURE INTO A STEEL MAKING FURNACE, AN OPEN TOPPED CHUTE HAVING SPACED ANGULARLY RELATED INLET AND
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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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |