US3255634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for withdrawing samples from molten metal baths
Assignee: Institut de Recherches de la Siderurgie Francaise IRSID
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Filing: 1962-11-13
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Granted: 1966-06-14
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Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Cavalier Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:57
CPC Classifications
B; B22; B22D; B22D18/00; B22D18/06; G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/12; G01N1/125; G01N1/14; G01N1/1409; G01N21/00; G01N21/62; G01N21/66; G01N21/67; Y; Y10; Y10S; Y10S73/00; Y10S73/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A METHOD OF WITHDRAWING A SAMPLE FROM MOLTEN METAL INTO A SAMPLING TUBE, COMPRISING THE STEPS OF MAINTAINING THE MATERIAL OF THE TUBE AT A TEMPERATURE NOT SUBSTANTIALLY EXCEEDING ROOM TEMPERATURE; INSERTING ONE END OF THE TUBE INTO THE METAL; AND GRADUALLY REDUCING THE PRESSURE PREVAILING IN THE INTERIOR OF THE TUBE BY EVACUATING AIR THROUGH THE OTHER END THEREOF IN SUCH A WAY THAT THE DROP OF PRESSURE GROWS IN DIRECT PROPORTION WITH THE TIME ELAPSED SINCE THE BEGINNING OF WITHDAWAL WHEREBY THE METAL PENETRATES GRADUALLY INTO THE TUBE.
Claim 2
Independent Claim
90 words
A METHOD OF WITHDRAWING A SAMPLE FROM MOLTEN METAL INTO A SAMPLING TUBE, COMPRISING THE STEPS OF MAINTAINING THE MATERIAL OF THE TUBE AT A TEMPERATURE NOT SUBSTANTIALLY EXCEEDING ROOM TEMPERATURE; INSERTING ONE END OF THE TUBE INTO THE METAL; AND GRADUALLY REDUCING THE PRESSURE PREVAILING IN THE INTERIOR OF THE TUBE BY EVACUATING AIR THROUGH THE OTHER END THEREOF IN SUCH A WAY THAT THE DROP OF PRESSURE GROWS IN DIRECT PROPORTION WITH THE TIME ELAPSED SINCE THE BEGINNING OF WITHDAWAL WHEREBY THE METAL PENETRATES GRADUALLY INTO THE TUBE.
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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |