Patent US3010852A successfully refreshed from Google Patents.
US3010852A
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Eliminating patterns from molds
Assignee: Howmet Turbine Components Corp
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Filing: 1958-06-10
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Granted: 1961-11-28
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Expires: 1978-06-10
Abstract
No abstract record available.
Inventors
- 👤 Charles H Prange
- 👤 John I Leonard
- 👤 Henry W Soller
- 👤 Roy C Feagin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:32
CPC Classifications
B; B22; B22C; B22C9/00; B22C9/02; B22C9/04; B22C9/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
THE METHOD OF ELIMINATING A READILY FUSIBLE PATTERN OF MATERIAL HAVING A HIGH COEFFICIENT OF THERMAL EXPANSION FROM A REFRACTORY SHELL MOLD WHICH COMPRISES IMMERSING THE MOLD WITH PATTERN THEREIN IN A NON-GASEOUS HEATING MEDIUM OF HIGH HEAT CAPACITY AT A TEMPERATURE AT LEAST 200*F. ABOVE THE FLOW POINT OF THE PATTERN MATERIAL, RETAINING THE MOLD IMMERSED IN SAID HOT MEDIUM UNTIL AT LEAST A MAJOR PART OF THE PATTERN HAS MELTED, AND DISCHARGING THE MOLTEN PATTERN MATERIAL FROM THE SHELL MOLD.
Claim 2
Independent Claim
82 words
THE METHOD OF ELIMINATING A READILY FUSIBLE PATTERN OF MATERIAL HAVING A HIGH COEFFICIENT OF THERMAL EXPANSION FROM A REFRACTORY SHELL MOLD WHICH COMPRISES IMMERSING THE MOLD WITH PATTERN THEREIN IN A NON-GASEOUS HEATING MEDIUM OF HIGH HEAT CAPACITY AT A TEMPERATURE AT LEAST 200*F. ABOVE THE FLOW POINT OF THE PATTERN MATERIAL, RETAINING THE MOLD IMMERSED IN SAID HOT MEDIUM UNTIL AT LEAST A MAJOR PART OF THE PATTERN HAS MELTED, AND DISCHARGING THE MOLTEN PATTERN MATERIAL FROM THE SHELL MOLD.
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) | 1964-11-27 | 1965-05-29 | 1965-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-27 | 1969-05-29 | 1969-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-27 | 1973-05-29 | 1973-11-28 | $7700.00 | Window Closed / Lapsed |