US3057026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foundry process and molding mixture
Assignee: Motors Liquidation Co
•
Filing: 1959-04-02
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Granted: 1962-10-09
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Expires: 1979-04-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Herbert O Blaies
- 👤 Charles F Froberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:48
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/22; B22C1/2233
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A PROCESS FOR CASING WITH A THIN-WALLED FOUNDRY MOLD, SAID PROCESS COMPRISING FORMING A SAND-ORGANIC BINDER MIXTURE OF ABOUT 0.4% TO 5% BY WEIGHT OF POLYMERIZED FURFURLY ALCOHOL HAVING A LOW MONOMER CONTENT, 0.05% TO 1% BY WEIGHT OF CURING AGENT FOR SAID POLYMERIZED FURFURYL ALCOHOL, AT LEAST 0.4% BY WEIGHT OF GREE STRENGTH ADDITIVE,0.5% TO 5% BY WEIGHT OF THERMOSETTING PHENOL ALDEHYDE RESIN, AND THE BALANCE SUBSTANTIALLY ALL SAND, PLACING SAID MIX INTO CONTACT WITH A METAL PATTERN WHICH HAS BEEN HEATED TO A TEMERATURE OF AT LEAST 250* F. TO BOND A SUBSTANTIAL PORTION OF THE SAND PARTICLES TOGETHER, THEREAFTER CURING THE FORMED SHELL MOLD BY HEATING WHILE IN CONTACT WITH SAID PATTERN AT A TEMPERATURE OF 300* TO 1500* F. FOR A SUFFICIENT TIME TO PREVENT THERMAL COMBUSTION OF THE ORGANIC BINDER, AND CASTING MATAL IN SAID CURED SHELL MOLD WHILE THE SAND THEREOF IS BOND BY SAID ORGANIC BINDER.
Claim 2
Dependent Claim
153 words
A PROCESS FOR CASING WITH A THIN-WALLED FOUNDRY MOLD, SAID PROCESS COMPRISING FORMING A SAND-ORGANIC BINDER MIXTURE OF ABOUT 0.4% TO 5% BY WEIGHT OF POLYMERIZED FURFURLY ALCOHOL HAVING A LOW MONOMER CONTENT, 0.05% TO 1% BY WEIGHT OF CURING AGENT FOR SAID POLYMERIZED FURFURYL ALCOHOL, AT LEAST 0.4% BY WEIGHT OF GREE STRENGTH ADDITIVE,0.5% TO 5% BY WEIGHT OF THERMOSETTING PHENOL ALDEHYDE RESIN, AND THE BALANCE SUBSTANTIALLY ALL SAND, PLACING SAID MIX INTO CONTACT WITH A METAL PATTERN WHICH HAS BEEN HEATED TO A TEMERATURE OF AT LEAST 250* F. TO BOND A SUBSTANTIAL PORTION OF THE SAND PARTICLES TOGETHER, THEREAFTER CURING THE FORMED SHELL MOLD BY HEATING WHILE IN CONTACT WITH SAID PATTERN AT A TEMPERATURE OF 300* TO 1500* F. FOR A SUFFICIENT TIME TO PREVENT THERMAL COMBUSTION OF THE ORGANIC BINDER, AND CASTING MATAL IN SAID CURED SHELL MOLD WHILE THE SAND THEREOF IS BOND BY SAID ORGANIC BINDER.
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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) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |