US3216075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing foundry cores and molds
Assignee: Quaker Oats Co
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Filing: 1963-02-05
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Granted: 1965-11-09
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Expires: 1983-02-05
Abstract
No abstract record available.
Inventors
- 👤 Lloyd H Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:07
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/22; B22C1/2233; B22C1/224; B22C23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A METHOD FOR THE HIGH-SPEED PRODUCTION OF CORES AND MOLDS SUITABLE FOR PRODUCTION OF SUBSTANTIALLY PINHOLE-FREE IRON AND STEEL CASTINGS COMPRISING THE FOLLOWING STEPS: (1) MIXING FOUNDRY SAND IN AN AMOUNT BETWEEN 94 AND 99.5 PARTS BY WEIGHT, AND BINDER IN AN AMOUNT BETWEEN ABOUT 0.5 AND 6.0 PARTS BY WEIGHT. SAID BINDER CONSISTING ESSENTIALLY OF A BORONCONTAINING COMPONENT SELECTED FROM THE GROUP CONSISTING OF BORON OXIDES, BORON ACIDS REFLECTING THE VARIOUS DEGREES, OF HYDRATION OF BORON OXIDES, AND LOWER OXY ACIDS OF BORON, SAID BORON-CONTAINING COMPONENT BEING PRESENT IN AN AMOUNT BETWEEN 5 AND 40% BY WEIGHT BASED ON THE WEIGHT OF THE BINDER, AND A SECOND COMPONENT WHICH IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF (A) A MIXTURE OF AN ACID CATALYST IN AN AMOUNT BETWEEN 0.5 AND 15% BY WEIGHT BASED ON THE WEIGHT OF SAID MIXTURE, AND A LIQUID FURFURYL ALCOHOL-FORMALDEHYDE COMPOSITION IN AN AMOUNT BETWEEN 99.5 AND 85% BY WEIGHT BASED ON THE WEIGHT OF SAID MIXTURE, SAID COMPOSITION CONTAINING AT LEAST 15% FURFURYL ALCOHOL MONOMER, AND HAVING BETWEEN
Claim 2
Independent Claim
176 words
A METHOD FOR THE HIGH-SPEED PRODUCTION OF CORES AND MOLDS SUITABLE FOR PRODUCTION OF SUBSTANTIALLY PINHOLE-FREE IRON AND STEEL CASTINGS COMPRISING THE FOLLOWING STEPS: (1) MIXING FOUNDRY SAND IN AN AMOUNT BETWEEN 94 AND 99.5 PARTS BY WEIGHT, AND BINDER IN AN AMOUNT BETWEEN ABOUT 0.5 AND 6.0 PARTS BY WEIGHT. SAID BINDER CONSISTING ESSENTIALLY OF A BORONCONTAINING COMPONENT SELECTED FROM THE GROUP CONSISTING OF BORON OXIDES, BORON ACIDS REFLECTING THE VARIOUS DEGREES, OF HYDRATION OF BORON OXIDES, AND LOWER OXY ACIDS OF BORON, SAID BORON-CONTAINING COMPONENT BEING PRESENT IN AN AMOUNT BETWEEN 5 AND 40% BY WEIGHT BASED ON THE WEIGHT OF THE BINDER, AND A SECOND COMPONENT WHICH IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF (A) A MIXTURE OF AN ACID CATALYST IN AN AMOUNT BETWEEN 0.5 AND 15% BY WEIGHT BASED ON THE WEIGHT OF SAID MIXTURE, AND A LIQUID FURFURYL ALCOHOL-FORMALDEHYDE COMPOSITION IN AN AMOUNT BETWEEN 99.5 AND 85% BY WEIGHT BASED ON THE WEIGHT OF SAID MIXTURE, SAID COMPOSITION CONTAINING AT LEAST 15% FURFURYL ALCOHOL MONOMER, AND HAVING BETWEEN
References Cited (Backward Citations)
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US2999829A
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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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |