US3196505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of making sand molds or cores for casting
Assignee: Mo och Domsjo AB
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Filing: 1961-12-14
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Granted: 1965-07-27
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Expires: 1981-12-14
Abstract
No abstract record available.
Inventors
- 👤 Moren Rolf Erhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:37
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/26; B22C1/167; B22C1/18; B22C1/181
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A METHOD OF MAKING SAND MOLDS OR CORES FOR METAL CASTING, COMPRISING ADDING TO SAND ALUMINOUS CEMENT IN AN AMOUNT OF 0.1 TO 5% BY WEIGHT BASED ON THE WEIGHT OF THE SAND, AN ALKALINE EARTH METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH OXIDES AND ALKALINE EARTH HYDROXIDES IN AN AMOUNT OF 0.2 TO 8% BY WEIGHT BASED ON THE WEIGHT OF THE SAND, AND A WATERSOLUBLE CELLULOSE DERIVATIVE IN AN AMOUNT OF 0.05 TO 4% BY WEIGHT BASED ON THE WEIGHT OF THE SAND, FORMING MOLDS OR CORES THEREFROM, AND HARDENING SAID MOLDS OR CORES.
Claim 2
Independent Claim
99 words
A METHOD OF MAKING SAND MOLDS OR CORES FOR METAL CASTING, COMPRISING ADDING TO SAND ALUMINOUS CEMENT IN AN AMOUNT OF 0.1 TO 5% BY WEIGHT BASED ON THE WEIGHT OF THE SAND, AN ALKALINE EARTH METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH OXIDES AND ALKALINE EARTH HYDROXIDES IN AN AMOUNT OF 0.2 TO 8% BY WEIGHT BASED ON THE WEIGHT OF THE SAND, AND A WATERSOLUBLE CELLULOSE DERIVATIVE IN AN AMOUNT OF 0.05 TO 4% BY WEIGHT BASED ON THE WEIGHT OF THE SAND, FORMING MOLDS OR CORES THEREFROM, AND HARDENING SAID MOLDS OR CORES.
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |