Patent US2867956A successfully refreshed from Google Patents.
US3417166A
Expired / Lapsed
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Melting furnace method
Assignee: Kaiser Aluminum and Chemical Corp
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Filing: 1966-02-21
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Granted: 1968-12-17
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Expires: 1986-02-21
Abstract
No abstract record available.
Inventors
- 👤 Thomas W F Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:58
CPC Classifications
F; F27; F27B; F27B14/00; C; C22; C22B; C22B21/00; C22B21/0084; C22B21/0092; C22B7/00; C22B7/001; C22B7/003; C22B7/04; C22B9/00; C22B9/10; C22B9/106; F27B17/00; F27B7/00; F27B7/02; F27B7/20; F27B7/2083; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A METHOD OF MELTING METAL MATERIAL COMPRISING THE STEPS OF: (A) PROVIDING A BODY OF MOLTEN SALT MATERIAL IN A FRIST CHAMBER, THE SALT HAVING A DENSITY LESS THAN THAT OF THE METAL TO BE MELTED AND BEING AT A TEMPERATURE SUFFICIENT TO MELT THE METAL; (B) CASCADING THE MOLTEN SALT OUT OF THE FIRST CHAMBER INTO A TROUGH SO AS TO CREATE AGITATION THEREIN; (C) INTRODUCING THE METAL TO BE MELTED INTO THE AGITATED MOLTEN SALT IN THE TROUGH; (D) CASCADING THE AGITATED MOLTEN SALT AND METAL MIXTURE FROM THE TROUGH INTO A SECOND CHAMBER SO AS TO ACHIEVE INTIMATE CONTACT AND MIXING OF THE MOLTEN SALT AND THE METAL; (E) CASCADING THE MIXTURE OF MOLEN SALT AND METAL FROM THE SECOND CHAMBER INTO THE TROUGH, THROUGH THE TROUGH AND INTO THE FIRST CHAMBER; (F) CONTINUING THE CASCADING MOVEMENT OF THE MIXTURE BETWEEN THE CHAMBERS VIA THE TROUGH UNTIL THE METAL HAS MELTED; AND (G) COLLECTION THE MOLTEN METAL BELOW THE MOLTEN SALT IN ONE OF THE CHAMBERS.
Claim 2
Independent Claim
169 words
A METHOD OF MELTING METAL MATERIAL COMPRISING THE STEPS OF: (A) PROVIDING A BODY OF MOLTEN SALT MATERIAL IN A FRIST CHAMBER, THE SALT HAVING A DENSITY LESS THAN THAT OF THE METAL TO BE MELTED AND BEING AT A TEMPERATURE SUFFICIENT TO MELT THE METAL; (B) CASCADING THE MOLTEN SALT OUT OF THE FIRST CHAMBER INTO A TROUGH SO AS TO CREATE AGITATION THEREIN; (C) INTRODUCING THE METAL TO BE MELTED INTO THE AGITATED MOLTEN SALT IN THE TROUGH; (D) CASCADING THE AGITATED MOLTEN SALT AND METAL MIXTURE FROM THE TROUGH INTO A SECOND CHAMBER SO AS TO ACHIEVE INTIMATE CONTACT AND MIXING OF THE MOLTEN SALT AND THE METAL; (E) CASCADING THE MIXTURE OF MOLEN SALT AND METAL FROM THE SECOND CHAMBER INTO THE TROUGH, THROUGH THE TROUGH AND INTO THE FIRST CHAMBER; (F) CONTINUING THE CASCADING MOVEMENT OF THE MIXTURE BETWEEN THE CHAMBERS VIA THE TROUGH UNTIL THE METAL HAS MELTED; AND (G) COLLECTION THE MOLTEN METAL BELOW THE MOLTEN SALT IN ONE OF THE CHAMBERS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |