US3086874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Green molding sand additive
Assignee: Whitehead Brothers Co
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Filing: 1961-03-21
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Granted: 1963-04-23
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Expires: 1981-03-21
Abstract
No abstract record available.
Inventors
- 👤 Burgess P Wallace
- 👤 Ronald E Melcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:06
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A GREEN MOLDING SAND COMPOSITION CONSISTING ESSENTIALLY OF FROM 85% TO 97% SAND, 3% TO 15% CLAY, WATER AND AN AMOUNT OF AN ADDITIVE MATERIAL SELECTED FROM THE GROUP CONSISTING OF MODIFIED STARCHES AND STARCH DERIVATIVES WHICH ARE SUBSTANTIALLY INSOLUBLE AND SUBSTANTIALLY NON-ADHESIVE IN COLD WATER AND FORM GEL STRUCTURES IN THE PRESENCE OF STEAM AND HOT WATER, SAID AMOUNT OF SAID ADDITIVE BEING EFFECTIVE TO PREVENT OVERWETTING THE CLAY BOND IN A GREEN SAID MOLD MADE FROM SAID GREEN MOLDING SAID COMPOSITION DURING THE CASTING OF MOLTEN METAL IN SAID MOLD.
Claim 2
Dependent Claim
92 words
A GREEN MOLDING SAND COMPOSITION CONSISTING ESSENTIALLY OF FROM 85% TO 97% SAND, 3% TO 15% CLAY, WATER AND AN AMOUNT OF AN ADDITIVE MATERIAL SELECTED FROM THE GROUP CONSISTING OF MODIFIED STARCHES AND STARCH DERIVATIVES WHICH ARE SUBSTANTIALLY INSOLUBLE AND SUBSTANTIALLY NON-ADHESIVE IN COLD WATER AND FORM GEL STRUCTURES IN THE PRESENCE OF STEAM AND HOT WATER, SAID AMOUNT OF SAID ADDITIVE BEING EFFECTIVE TO PREVENT OVERWETTING THE CLAY BOND IN A GREEN SAID MOLD MADE FROM SAID GREEN MOLDING SAID COMPOSITION DURING THE CASTING OF MOLTEN METAL IN SAID 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) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |