US3131051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for refining loosely compacted refractory metals in an electron beam furnace
Assignee: Stauffer Chemical Co
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Filing: 1959-09-23
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Granted: 1964-04-28
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Expires: 1979-09-23
Abstract
No abstract record available.
Inventors
- 👤 Charles W Hanks
- 👤 Charles D A Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:44
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/16; C22B9/22; C22B9/228; Y; Y10; Y10S; Y10S266/00; Y10S266/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A HIGH-VACUUM FURNACE FOR MELTING RECTANGULAR BLOCKS OF COMPACTED GRANULAR MATERIAL ARRANGED IN A STACK AT LEAST TWO LAYERS DEEP, THE BLOCKS IN EACH LAYER BEING ALIGNED IN AN ABUTTING END-TO-END RELATIONSHIP, COMPRISING A FLAT, HORIZONTAL PLATFORM, ARANGED TO SUPPORT THE STACK OF BLOCKS WITH ONE END OF SAID STACK PROTRUDING OVER ONE END OF SAID PLATFORM, AT LEAST ONE THERIONIC ELECTRON-EMITTING CATHODE, MEANS FOR ACCELERATING AND DIRECTING ELECTRONS FORM SAID CATHODE ONTO THE PROTRUDING END OF SAID STACK ACTING AS AN ANODE TO HEAT AND MELT THE SAME, A CRUCIBLE ARRANGED UNDER SAID PROJECTING END TO RECEIVE THE MOLTEN MATERIAL DRIPPING THEREFROM, MEANS.
Claim 2
Dependent Claim
104 words
A HIGH-VACUUM FURNACE FOR MELTING RECTANGULAR BLOCKS OF COMPACTED GRANULAR MATERIAL ARRANGED IN A STACK AT LEAST TWO LAYERS DEEP, THE BLOCKS IN EACH LAYER BEING ALIGNED IN AN ABUTTING END-TO-END RELATIONSHIP, COMPRISING A FLAT, HORIZONTAL PLATFORM, ARANGED TO SUPPORT THE STACK OF BLOCKS WITH ONE END OF SAID STACK PROTRUDING OVER ONE END OF SAID PLATFORM, AT LEAST ONE THERIONIC ELECTRON-EMITTING CATHODE, MEANS FOR ACCELERATING AND DIRECTING ELECTRONS FORM SAID CATHODE ONTO THE PROTRUDING END OF SAID STACK ACTING AS AN ANODE TO HEAT AND MELT THE SAME, A CRUCIBLE ARRANGED UNDER SAID PROJECTING END TO RECEIVE THE MOLTEN MATERIAL DRIPPING THEREFROM, MEANS.
References Cited (Backward Citations)
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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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |