US3305358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for shaping beryllium and other metals and ceramics
Assignee: Howmet Turbine Components Corp
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Filing: 1963-09-20
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Granted: 1967-02-21
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Expires: 1983-09-20
Abstract
No abstract record available.
Inventors
- 👤 Nick G Lirones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:21
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/28; B; B22; B22F; B22F3/00; B22F3/12; B22F3/1208; B22F3/1258; B22F3/1275; C04B33/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN THE MOLDING OF CASTSHAPES OF BERYLLIUM, THE STEPS OF PROVIDING A MOLD FORMED OF GRPHITE IN CROSS-SECTION THROUGH AT LEAST THE INNER PORTION OF THE MOLD ABOUT THE MOLD CAVITY INCLUDING LAYERS OF COLLOIDAL GRAPHITE AND GRAPHITE FLOUR ALTERNATING WITH LAYERS OF GRAPHITE STUCCO, FILLING THE MOLDCAVITY WITH BERYLLIUM POWDER IN FINELY DIVIDED FORM, IMPACTING THE MOLD TO DENSIFY THE BERYLLIUM IN THE MOLD CAVITY, HEATING THE ASSEMBLY TO A TEMPERATURE ABOVE SINTERING TEMPERATURE FOR THE BERYLLIUM POWDER TO SINTER THE BERYLLIUM POWDER CAST INTO THE MOLD, AND MAINTAINING A NON-OXIDIZING ATMOSPHERE DURING THE HEATING TO INTERING AND SUBSEQUENT COOLING.
Claim 2
Dependent Claim
101 words
IN THE MOLDING OF CASTSHAPES OF BERYLLIUM, THE STEPS OF PROVIDING A MOLD FORMED OF GRPHITE IN CROSS-SECTION THROUGH AT LEAST THE INNER PORTION OF THE MOLD ABOUT THE MOLD CAVITY INCLUDING LAYERS OF COLLOIDAL GRAPHITE AND GRAPHITE FLOUR ALTERNATING WITH LAYERS OF GRAPHITE STUCCO, FILLING THE MOLDCAVITY WITH BERYLLIUM POWDER IN FINELY DIVIDED FORM, IMPACTING THE MOLD TO DENSIFY THE BERYLLIUM IN THE MOLD CAVITY, HEATING THE ASSEMBLY TO A TEMPERATURE ABOVE SINTERING TEMPERATURE FOR THE BERYLLIUM POWDER TO SINTER THE BERYLLIUM POWDER CAST INTO THE MOLD, AND MAINTAINING A NON-OXIDIZING ATMOSPHERE DURING THE HEATING TO INTERING AND SUBSEQUENT COOLING.
References Cited (Backward Citations)
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US2698990A
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US2886869A
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US2862826A
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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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |