US3218154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal processing method
Assignee: Westinghouse Electric Corp
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Filing: 1962-12-06
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Granted: 1965-11-16
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Expires: 1982-12-06
Abstract
No abstract record available.
Inventors
- 👤 Heinz G Sell
- 👤 Mcfall Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:38
CPC Classifications
C; C30; C30B; C30B13/00; C30B13/16; C30B13/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
211 words
THE METHOD OF CONSOLIDATING FINELY DIVIDED REFRACTORY METAL INTO A UNITARY MASS HAVING A HIGH BULK DENSITY SUBSTANTIALLY CORRESPONDING TO THE THEORETICAL DENSITY OF SUCH REFRACTORY METAL, WHICH METHOD COMPRISES: (A) FORMING SAID FINELY DIVIDED METAL INTO A SUBSTANTIALLY UNSINTERED SELF-SUSTAINING ELONGATED MASS OF PREDETERMINED CROSS-SECTIONAL AREA AND HAVING A SUBSTANTIAL DEGREE OF POROSITY; (B) SUPPORTING SAID ELONGATED MASS IN A VACUUM; (C) BOMBARDING A LIMITED LENGTH PORTION OF SAID MASS WITH AN ELECTRON BEAM HAVING PREDETERMINED ENERGY AS REQUIRED TO MELT SUCH BOMBARDED PORTION THROUGHOUT ITS CROSS SECTION, WITH THE LIMITED LENGTH OF SUCH BOMBARDED PORTION PREVENTING THE MELTED METAL FROM RUNNING; (D) MOVING SAID ELONGATED MASS AND SAID BOMBARDING ELECTRON BEAM RELATIVE TO ONE ANOTHER TO CAUSE SAID ELECTRON BEAM TO MOVE AT A PREDETERMINED RATE OF SPEED ALONG THE LENGTH DIMENSION OF SAID MASS TO SEQUENTIALLY MELT ADJACENT LIMITED LENGTH PORTIONS OF SAID MASS, WITH MELTED PORTIONS OF SAID MASS SOLIDIFYING AFTER BOMBARDMENT TO A BULK DENSITY SUBSTANTIALLY EQUAL TO THE THEORETICAL DENSITY OF SAID METAL; AND (E) CONTINUING THE MOVEMENT OF SAID ELECTRON BEAM ALONG THE LENGTH DIMENSION OF SAID MASS UNTIL A PREDETEREMINED LENGTH OF SAID MASS HAS BEEN MELTED AND THEN SOLIDIFIED TO A BULK DENSITY SUBSTANTIALLY EQUAL TO THE THEORETICAL DENSITY OF SAID METAL.
Claim 2
Independent Claim
211 words
THE METHOD OF CONSOLIDATING FINELY DIVIDED REFRACTORY METAL INTO A UNITARY MASS HAVING A HIGH BULK DENSITY SUBSTANTIALLY CORRESPONDING TO THE THEORETICAL DENSITY OF SUCH REFRACTORY METAL, WHICH METHOD COMPRISES: (A) FORMING SAID FINELY DIVIDED METAL INTO A SUBSTANTIALLY UNSINTERED SELF-SUSTAINING ELONGATED MASS OF PREDETERMINED CROSS-SECTIONAL AREA AND HAVING A SUBSTANTIAL DEGREE OF POROSITY; (B) SUPPORTING SAID ELONGATED MASS IN A VACUUM; (C) BOMBARDING A LIMITED LENGTH PORTION OF SAID MASS WITH AN ELECTRON BEAM HAVING PREDETERMINED ENERGY AS REQUIRED TO MELT SUCH BOMBARDED PORTION THROUGHOUT ITS CROSS SECTION, WITH THE LIMITED LENGTH OF SUCH BOMBARDED PORTION PREVENTING THE MELTED METAL FROM RUNNING; (D) MOVING SAID ELONGATED MASS AND SAID BOMBARDING ELECTRON BEAM RELATIVE TO ONE ANOTHER TO CAUSE SAID ELECTRON BEAM TO MOVE AT A PREDETERMINED RATE OF SPEED ALONG THE LENGTH DIMENSION OF SAID MASS TO SEQUENTIALLY MELT ADJACENT LIMITED LENGTH PORTIONS OF SAID MASS, WITH MELTED PORTIONS OF SAID MASS SOLIDIFYING AFTER BOMBARDMENT TO A BULK DENSITY SUBSTANTIALLY EQUAL TO THE THEORETICAL DENSITY OF SAID METAL; AND (E) CONTINUING THE MOVEMENT OF SAID ELECTRON BEAM ALONG THE LENGTH DIMENSION OF SAID MASS UNTIL A PREDETEREMINED LENGTH OF SAID MASS HAS BEEN MELTED AND THEN SOLIDIFIED TO A BULK DENSITY SUBSTANTIALLY EQUAL TO THE THEORETICAL DENSITY OF SAID METAL.
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |