US2946700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of infiltrated composites
Assignee: Crucible Steel Company of America
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Filing: 1957-12-24
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Granted: 1960-07-26
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Expires: 1977-12-24
Abstract
No abstract record available.
Inventors
- 👤 Maurice J Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:36
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/24; B22F3/26; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/1216
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
THE METHOD OF PRODUCING INFILTRATED COMPOSITES COMPRISING AN INITIALLY POROUS MATRIX OF HIGHER MELTING MATERIAL INFILTRATED WITH A LOWER MELTILNG METAL, WHICH COMPRISES: ARC MELTING A CONSUMABLE ELECTRODE COMPOSED OF SAID INFILTRANT METAL TO FORM A MOLTEN POOL THEREOF IN WHICH SAID MATRIX IS IMMERSED AND WHILE MAINTAINING A SUBSTANTIALLY SUBATMOSPHERILC PRESSURE SURROUNDING SAID ARC AND MATRIX DURING AT LEAST THE INITIAL PORTION OF SAID MELTING, THEREUPON INCREASING SAID PRESSURE SUFFICIENTLY TO FORCE THE MOLTEN INFILTRANT METAL INTO THE PORES OF SAID MATRIX TO THE MAXIMUM EXTENT, AND THEREUPON REMOVING THE EXCESS MOLTEN INFILTRANT METAL.
Claim 2
Independent Claim
95 words
THE METHOD OF PRODUCING INFILTRATED COMPOSITES COMPRISING AN INITIALLY POROUS MATRIX OF HIGHER MELTING MATERIAL INFILTRATED WITH A LOWER MELTILNG METAL, WHICH COMPRISES: ARC MELTING A CONSUMABLE ELECTRODE COMPOSED OF SAID INFILTRANT METAL TO FORM A MOLTEN POOL THEREOF IN WHICH SAID MATRIX IS IMMERSED AND WHILE MAINTAINING A SUBSTANTIALLY SUBATMOSPHERILC PRESSURE SURROUNDING SAID ARC AND MATRIX DURING AT LEAST THE INITIAL PORTION OF SAID MELTING, THEREUPON INCREASING SAID PRESSURE SUFFICIENTLY TO FORCE THE MOLTEN INFILTRANT METAL INTO THE PORES OF SAID MATRIX TO THE MAXIMUM EXTENT, AND THEREUPON REMOVING THE EXCESS MOLTEN INFILTRANT 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) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |