Patent US3197828A successfully refreshed from Google Patents.
US3197828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cast iron protection
Assignee: Pechiney SA
•
Filing: 1962-01-02
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Granted: 1965-08-03
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Expires: 1982-01-02
Abstract
No abstract record available.
Inventors
- 👤 Cartoux Henri
- 👤 Dubrous Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:01
CPC Classifications
B; B22; B22D; B22D7/00; B22D7/06; B22C; B22C23/00; B22C23/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A PROCESS FOR CASTING MOLTEN METALLIFEROUS MATERIALS OTHER THAN ALUMINUM AND ALUMINUM BASE ALLOWS INTO PROTECTED CAST IRON INGOT MOULDS, SAID MOLDS BEING INITIALLY CHARACTERIZED BY A RAW CAST IRON SURFACE, SAID PROCESS COMPRISING THE STEPS OF CASTING INTO SAID MOLDS AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND A FERROALUMINUM CONTAINING FROM 30 TO 40 PERCENT ALUMINUM, HOLDING THE METAL IN SAID MOLD FOR AT LEAST ABOUT 20 MINUTES AT A TEMPERATURE RANGE FROM AT LEAST ABOUT 50*C. HIGHER THAN THE MELTING POINT OF SAID METAL, WITHDRAWING AFTER SOLIDIFICATION THE METAL CAST INTO SAID MOLD FOR FROM THREE TO 15 TIMES, AND THEREAFTER CASTING A METAL OR ALLOY OTHER THAN AN ALUMINUM BASE METALLIFEROUS MATERIAL INTO THE MOULDS THUS PROTECTED.
Claim 2
Dependent Claim
125 words
A PROCESS FOR CASTING MOLTEN METALLIFEROUS MATERIALS OTHER THAN ALUMINUM AND ALUMINUM BASE ALLOWS INTO PROTECTED CAST IRON INGOT MOULDS, SAID MOLDS BEING INITIALLY CHARACTERIZED BY A RAW CAST IRON SURFACE, SAID PROCESS COMPRISING THE STEPS OF CASTING INTO SAID MOLDS AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND A FERROALUMINUM CONTAINING FROM 30 TO 40 PERCENT ALUMINUM, HOLDING THE METAL IN SAID MOLD FOR AT LEAST ABOUT 20 MINUTES AT A TEMPERATURE RANGE FROM AT LEAST ABOUT 50*C. HIGHER THAN THE MELTING POINT OF SAID METAL, WITHDRAWING AFTER SOLIDIFICATION THE METAL CAST INTO SAID MOLD FOR FROM THREE TO 15 TIMES, AND THEREAFTER CASTING A METAL OR ALLOY OTHER THAN AN ALUMINUM BASE METALLIFEROUS MATERIAL INTO THE MOULDS THUS PROTECTED.
References Cited (Backward Citations)
US2090408A
Cited
US2197660A
Cited
US2304067A
Cited
US2396730A
Cited
US2455457A
Cited
US2620530A
Cited
US2618530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |