Patent US3226785A successfully refreshed from Google Patents.
US3226785A
Expired / Lapsed
US
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Metal casting process using destructible pattern
Assignee: Individual
•
Filing: 1964-03-20
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Granted: 1966-01-04
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Expires: 1984-03-20
Abstract
No abstract record available.
Inventors
- 👤 George S Moxlow
- 👤 Witte Adhemar O De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:17
CPC Classifications
B; B22; B22C; B22C9/00; B22C9/02; B22C9/04; B22C9/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN A METAL CASTING PROCESS, EMBEDDING A PATTERN OF EXPANDED PLASTIC MATERIAL IN THE SAND OF A MOLD, PROVIDING AT LEAST ONE INGATE OPENING AND ONE RISER OPENING IN SAID MOLD LEADING TO AND FROM SAID PATTERN, APPLYING HEATED SOLVENT VAPOR CAPABLE OF DEGRADING AND DECOMPOSING SAID MATERIAL TO SAID PATTERN THROUGH ONE OR MORE OF SAID OPENINGS, DEGRADING AND DECOMPOSING SAID EXPANDED PLASTIC PATTERN IN SAID MOLD TO FORM A CASTING CAVITY THEHREIN SUBSTANTIALLY THE COMPLEMENT OF SAID PATTERN, POURING MOLTEN METAL TO SAID MOLD CAVITY TO FORM A CASTING SUBSTANTIALLY A REPRODUCTION OF SAID PATTERN,
Claim 2
Dependent Claim
97 words
IN A METAL CASTING PROCESS, EMBEDDING A PATTERN OF EXPANDED PLASTIC MATERIAL IN THE SAND OF A MOLD, PROVIDING AT LEAST ONE INGATE OPENING AND ONE RISER OPENING IN SAID MOLD LEADING TO AND FROM SAID PATTERN, APPLYING HEATED SOLVENT VAPOR CAPABLE OF DEGRADING AND DECOMPOSING SAID MATERIAL TO SAID PATTERN THROUGH ONE OR MORE OF SAID OPENINGS, DEGRADING AND DECOMPOSING SAID EXPANDED PLASTIC PATTERN IN SAID MOLD TO FORM A CASTING CAVITY THEHREIN SUBSTANTIALLY THE COMPLEMENT OF SAID PATTERN, POURING MOLTEN METAL TO SAID MOLD CAVITY TO FORM A CASTING SUBSTANTIALLY A REPRODUCTION OF SAID PATTERN,
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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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |