US3024102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-vacuum titanium a. c. arc melting
Assignee: Union Carbide Corp
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Filing: 1956-03-16
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Granted: 1962-03-06
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Expires: 1976-03-16
Abstract
No abstract record available.
Inventors
- 👤 Charles M Brown
- 👤 Robert L Folkman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:10
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1295
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
THE METHOD OF ARC MELTING TITANIUM AND ITS ALLOYS, WHICH COMPRISES CONNECTING A CONSUMABLE ELECTRODE OF THE METAL OR ALLOY TO BE MELTED TO ONE SIDE OF AN ALTERNATING CURRENT SOURCE OF ELECTRICAL POWER, CONNECTING ANOTHER ELECTRODE IN THE FORM OF A CRUCIBLE TO THE OTHER SIDE OF SUCH SOURCE, ARRANGING SUCH CONSUMABLE ELECTRODE TOGETHER WITH A SUBSTANCE HAVING A LOWER IONIZATION POTENTIAL THAN THAT OF TITANIUM IN SUCH CRUCIBLE WITHIN AS CLOSED FURNACE, REDUCING THE PRESSURE WITHIN SUCH CHAMBER TO A VALUE BETWEEN 1 TO 1,000 MICRONS OF MERCURY, STRIKING AN ALTERNATING CURRENT ARE BETWEEN SUCH ELECTRODES, MELTING WITH SUCH ARC THE TITANIUM OR ITS ALLOY, AND FEEDING SUCH CONSUMABLE ELECTRODE TOWARD SUCH ARC AS SUCH MELTING PROGRESS WHILE CONTINUOUSLY SUPPLYING SAID SUBSTANCE TO SUCH ARC, THE EFFECT OF SAID SUBSTANCE ON SUCH ARC BEING TO ASSURE UNDER SUCH LOW PRESSURE FULL-WAVE ALTERNATING CURRENT OPERATION OF THE ARC WHICH IS CHARACTERIZED BY A DEFINITE RELATIONSHIP BETWEEN THE ARC VOLTAGE AND ARC LENGTH, WHICH PROVIDES MEANS FOR ACCURATELY CONTROLLING THE FEED OF SUCH CONSUMABLE ELECTRODE AS IT IS CONSUMED BY SUCH ARC.
Claim 2
Independent Claim
182 words
THE METHOD OF ARC MELTING TITANIUM AND ITS ALLOYS, WHICH COMPRISES CONNECTING A CONSUMABLE ELECTRODE OF THE METAL OR ALLOY TO BE MELTED TO ONE SIDE OF AN ALTERNATING CURRENT SOURCE OF ELECTRICAL POWER, CONNECTING ANOTHER ELECTRODE IN THE FORM OF A CRUCIBLE TO THE OTHER SIDE OF SUCH SOURCE, ARRANGING SUCH CONSUMABLE ELECTRODE TOGETHER WITH A SUBSTANCE HAVING A LOWER IONIZATION POTENTIAL THAN THAT OF TITANIUM IN SUCH CRUCIBLE WITHIN AS CLOSED FURNACE, REDUCING THE PRESSURE WITHIN SUCH CHAMBER TO A VALUE BETWEEN 1 TO 1,000 MICRONS OF MERCURY, STRIKING AN ALTERNATING CURRENT ARE BETWEEN SUCH ELECTRODES, MELTING WITH SUCH ARC THE TITANIUM OR ITS ALLOY, AND FEEDING SUCH CONSUMABLE ELECTRODE TOWARD SUCH ARC AS SUCH MELTING PROGRESS WHILE CONTINUOUSLY SUPPLYING SAID SUBSTANCE TO SUCH ARC, THE EFFECT OF SAID SUBSTANCE ON SUCH ARC BEING TO ASSURE UNDER SUCH LOW PRESSURE FULL-WAVE ALTERNATING CURRENT OPERATION OF THE ARC WHICH IS CHARACTERIZED BY A DEFINITE RELATIONSHIP BETWEEN THE ARC VOLTAGE AND ARC LENGTH, WHICH PROVIDES MEANS FOR ACCURATELY CONTROLLING THE FEED OF SUCH CONSUMABLE ELECTRODE AS IT IS CONSUMED BY SUCH ARC.
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) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |