US2726431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing a sand-resin molding member by vibrating
Assignee: Ford Motor Co
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Filing: 1951-12-15
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Granted: 1955-12-13
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Expires: 1971-12-15
Abstract
No abstract record available.
Inventors
- 👤 Elbert E Ensign
- 👤 Royal Arch Van Patter
- 👤 Julius M Bleuenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:19
CPC Classifications
B; B22; B22C; B22C15/00; B22C15/28; B22C15/30; B22C23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
THE PROCESS OF PRODUCING A METAL MOLDING MEMBER COMPRISING HEATING A METAL PATTERN TO A TEMPERATURE OF AT LEAST 350* F., ENERGETICALLY VIBRATING THE HEATED PATTERN, CONTACTING THE VIBRATING METAL PATTERN WITH A SAND RESIN MIXTURE IN WHICH THE SAND GRAINS ARE OF NON-UNIFORM SIZE, WHEREBY THE HEAT AND VIBRATION CAUSE AT LEAST A PORTION OF THE SAND RESIN MIXTURE TO FLOW AND DURING AT LEAST A PORTION OF THE TIME THE RESIN IS CURING UPON THE PATTERN AND WHILE THE PATTERN IS BEING VIBRATED SUBJECTING THE SAND RESIN MIXTURE TO A PERIODICALLY VARYING PRESSURE WHEREBY A SURFACE IS PRODUCED IN WHICH THE AVERAGE GRAIN SIZE IS SMALLER THAN THAT OF THE ORIGINAL SAND RESIN MIX.
Claim 2
Dependent Claim
116 words
THE PROCESS OF PRODUCING A METAL MOLDING MEMBER COMPRISING HEATING A METAL PATTERN TO A TEMPERATURE OF AT LEAST 350* F., ENERGETICALLY VIBRATING THE HEATED PATTERN, CONTACTING THE VIBRATING METAL PATTERN WITH A SAND RESIN MIXTURE IN WHICH THE SAND GRAINS ARE OF NON-UNIFORM SIZE, WHEREBY THE HEAT AND VIBRATION CAUSE AT LEAST A PORTION OF THE SAND RESIN MIXTURE TO FLOW AND DURING AT LEAST A PORTION OF THE TIME THE RESIN IS CURING UPON THE PATTERN AND WHILE THE PATTERN IS BEING VIBRATED SUBJECTING THE SAND RESIN MIXTURE TO A PERIODICALLY VARYING PRESSURE WHEREBY A SURFACE IS PRODUCED IN WHICH THE AVERAGE GRAIN SIZE IS SMALLER THAN THAT OF THE ORIGINAL SAND RESIN MIX.
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) | 1958-12-12 | 1959-06-13 | 1959-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-12 | 1963-06-13 | 1963-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-12 | 1967-06-13 | 1967-12-13 | $7700.00 | Window Closed / Lapsed |