US2876512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shell molding
Assignee: Ford Motor Co
•
Filing: 1953-11-16
•
Granted: 1959-03-10
•
Expires: 1973-11-16
Abstract
No abstract record available.
Inventors
- 👤 Julius M Bleuenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:10
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/22; B22C1/2233; B22C1/2246; B22C1/2253
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
THE PROCESS OF PRODUCING A FOUNDING SHELL MOLD COMPRISING HEATING A MASS OF SAND, ADDING TO THE HEATED SAND A MINOR PERCENTAGE OF AN AQUEOUS SOLUTION OF AN ALDEHYDE RICH WATER SOLUBLLE AND WATER DILUTABLE PHENOLICAKDEHYDE RESIN AND A RESINIFICATION CATALYST, AGITATING THE HOT SAND, RESIN MIXTURE UNTIL THE WATER OF SOLUTION AND WATER OF REACTION ARE SUBSTANTIALLY ALL EVAPORATED AND A WATER FREE PASTY, HOT MASS RESULTS, COOLING THE SANDRESIN MIXTURE BEFORE POLYMERIZATION HAS ADVANCED SUBSTANTIALLY, MULLING THE COOLED MASS TO PRODUCE A DUSTLESS, DRY, SAND-RESIN MATERIAL, APPLYING THIS MATERIAL TO A PATTERN AND PERMITTING THE RESIN TO CURE ON THE PATERN TO PRODUCE A MOLD.
Claim 2
Dependent Claim
107 words
THE PROCESS OF PRODUCING A FOUNDING SHELL MOLD COMPRISING HEATING A MASS OF SAND, ADDING TO THE HEATED SAND A MINOR PERCENTAGE OF AN AQUEOUS SOLUTION OF AN ALDEHYDE RICH WATER SOLUBLLE AND WATER DILUTABLE PHENOLICAKDEHYDE RESIN AND A RESINIFICATION CATALYST, AGITATING THE HOT SAND, RESIN MIXTURE UNTIL THE WATER OF SOLUTION AND WATER OF REACTION ARE SUBSTANTIALLY ALL EVAPORATED AND A WATER FREE PASTY, HOT MASS RESULTS, COOLING THE SANDRESIN MIXTURE BEFORE POLYMERIZATION HAS ADVANCED SUBSTANTIALLY, MULLING THE COOLED MASS TO PRODUCE A DUSTLESS, DRY, SAND-RESIN MATERIAL, APPLYING THIS MATERIAL TO A PATTERN AND PERMITTING THE RESIN TO CURE ON THE PATERN TO PRODUCE A MOLD.
References Cited (Backward Citations)
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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) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |