US2906653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die-casting of iron in chill-moulds
Assignee: Renault SA
•
Filing: 1955-12-27
•
Granted: 1959-09-29
•
Expires: 1975-12-27
Abstract
No abstract record available.
Inventors
- 👤 Peras Lucien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:35
CPC Classifications
C; C22; C22C; C22C37/00; C22C37/04; Y; Y10; Y10S; Y10S148/00; Y10S148/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A METHOD OF OBTAINING CASTINGS OF PEARLITIC STRUCTURE CONTAINING DIFFUSED FINE PARTICLES OF GRAPHITE WHICH COMPRISES DIE CASTING IN A CHILL MOLD AN IRON SUITABLE FOR THE FORMATION OF WHITE IRON, STRIPPING THE CASTING FROM THE MOLD WHILE HOT, AND HEAT-TREATING THE CASTING IN A SINGLE CYCLE COMPRISING THE STEPS OF ANNEALING TO A TEMPERATURE ABOVE 850* C. FOR 1/2 TO 6 HOURS, AND COOLING IN AIR.
Claim 2
Independent Claim
67 words
A METHOD OF OBTAINING CASTINGS OF PEARLITIC STRUCTURE CONTAINING DIFFUSED FINE PARTICLES OF GRAPHITE WHICH COMPRISES DIE CASTING IN A CHILL MOLD AN IRON SUITABLE FOR THE FORMATION OF WHITE IRON, STRIPPING THE CASTING FROM THE MOLD WHILE HOT, AND HEAT-TREATING THE CASTING IN A SINGLE CYCLE COMPRISING THE STEPS OF ANNEALING TO A TEMPERATURE ABOVE 850* C. FOR 1/2 TO 6 HOURS, AND COOLING IN AIR.
References Cited (Backward Citations)
US1815361A
Cited
FR999242A
Cited
US1498128A
Cited
US1747728A
Cited
US2185894A
Cited
US2331886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |