Patent US2973564A successfully refreshed from Google Patents.
US2973564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of graphitizing cast iron
Assignee: Huntington Alloys Corp
•
Filing: 1958-04-29
•
Granted: 1961-03-07
•
Expires: 1978-04-29
Abstract
No abstract record available.
Inventors
- 👤 Ronald H T Dixon
- 👤 John H Gittus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:37
CPC Classifications
C; C22; C22C; C22C37/00; C22C37/04; Y; Y10; Y10S; Y10S164/00; Y10S164/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
THE METHOD FOR PRODUCING A GRAY IRON CASTING HAVING IMPROVED METALLURGICAL QUALITY WHICH COMPRISES ESTABLISHING A BATH OF CAST IRON HAVING SUCH A COMPOSITION THAT IT TENDS TO FREEZE AS A WHITE CAST IRON CONTAINING CARBIDES WHEN POURED INTO A MOLD, CASTING METAL FROM SAID BATH INTO A MOLD, AND GRAPHITIZING SAID METAL BY APPLYING VIBRATION AT A FREQUENCY OF AT LEAST ABOUT 50 CYCLES PER MINUTE TO SAID METAL DURING THE SOLIDIFICATION THEREOF TO FORM A CASTING HAVING SUBSTANTIALLY NO RETAINED CARBIDES AND HAVING IMPROVED METALLURGICAL QUALITY.
Claim 2
Independent Claim
88 words
THE METHOD FOR PRODUCING A GRAY IRON CASTING HAVING IMPROVED METALLURGICAL QUALITY WHICH COMPRISES ESTABLISHING A BATH OF CAST IRON HAVING SUCH A COMPOSITION THAT IT TENDS TO FREEZE AS A WHITE CAST IRON CONTAINING CARBIDES WHEN POURED INTO A MOLD, CASTING METAL FROM SAID BATH INTO A MOLD, AND GRAPHITIZING SAID METAL BY APPLYING VIBRATION AT A FREQUENCY OF AT LEAST ABOUT 50 CYCLES PER MINUTE TO SAID METAL DURING THE SOLIDIFICATION THEREOF TO FORM A CASTING HAVING SUBSTANTIALLY NO RETAINED CARBIDES AND HAVING IMPROVED METALLURGICAL QUALITY.
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) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |