US2681485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal casting of metal
Assignee: Electric Steel Foundry Co
•
Filing: 1952-09-20
•
Granted: 1954-06-22
•
Expires: 1972-09-20
Abstract
No abstract record available.
Inventors
- 👤 Dan L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:25
CPC Classifications
B; B22; B22D; B22D13/00; B22D13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN A CENTRIFUGAL CASTING PROCESS FOR FORMING A CASTING IN A MOLD, IN WHICH PROCESS MOLTEN METAL IS POURED INTO A MOLD MOUNTED FOR ROTATION AND THE MOLD ROTATED ABOUT AN AXIS TO FORM THE CASTING, THE STEPS OF POURING MOLTEN METAL INTO THE MOLD AS THE SAME IS ROTATED TO FORM A HOLLOW MOLTEN BODY, AND, AFTER POURING THE METAL AND BEFORE THE METAL HAS COOLED TO ROOM TEMPERATURE, COATING THE INTERIOR OF THE HOLLOW CASTING WITH CARBON BY DIRECTING UPON SAID INTERIOR A STREAM OF GAS BEARING CARBON PARTICLES.
Claim 2
Dependent Claim
91 words
IN A CENTRIFUGAL CASTING PROCESS FOR FORMING A CASTING IN A MOLD, IN WHICH PROCESS MOLTEN METAL IS POURED INTO A MOLD MOUNTED FOR ROTATION AND THE MOLD ROTATED ABOUT AN AXIS TO FORM THE CASTING, THE STEPS OF POURING MOLTEN METAL INTO THE MOLD AS THE SAME IS ROTATED TO FORM A HOLLOW MOLTEN BODY, AND, AFTER POURING THE METAL AND BEFORE THE METAL HAS COOLED TO ROOM TEMPERATURE, COATING THE INTERIOR OF THE HOLLOW CASTING WITH CARBON BY DIRECTING UPON SAID INTERIOR A STREAM OF GAS BEARING CARBON PARTICLES.
References Cited (Backward Citations)
US895535A
Cited
US1469206A
Cited
US1831310A
Cited
US1697889A
Cited
US1987752A
Cited
US1908169A
Cited
US1957718A
Cited
US2124445A
Cited
US2376518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-21 | 1957-12-21 | 1958-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-21 | 1961-12-21 | 1962-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-21 | 1965-12-21 | 1966-06-22 | $7700.00 | Window Closed / Lapsed |