Patent US2475658A successfully refreshed from Google Patents.
Patent US2815276A successfully refreshed from Google Patents.
US2815276A
Expired / Lapsed
US
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Optical pyrometers for measuring the temperature of the metal bath during refining in the converter
Assignee: Institut de Recherches de la Siderurgie Francaise IRSID
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Filing: 1955-07-20
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Granted: 1957-12-03
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Expires: 1975-07-20
Abstract
No abstract record available.
Inventors
- 👤 Michaux Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:12
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/02; G01J5/05; G01J5/0037; G01J5/004; G01J5/04; G01J5/041; G01J5/051; G01J5/08; G01J5/0818; G01J5/084; G01J5/0843; G01J5/0893
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD OF MEASURING THE METAL BATH TEMPERATURE DURING THE REFINING PROCESS IN A CONVERTER, COMPRISING THE STEPS OF ALIGNING AN OPTICAL PYROMETER WITH A TUYERE HOLE OF THE CONVERTER, FLUID-TIGHTLY ISOLATING SAID TUYERE HOLE FROM BLAST AIR DIRECTED INTO THE CONVERTER SO THAT NO AIR PASSES THERETHROUGH, DIRECTING A CHEMICALLY INERT GAS BLAST INTO SAID TUYERE HOLE AT A PRESSURE SUFFICIENT TO PRE VENT BLAST AIR FROM REACHING THE HOLE AND TO PREVENT THE METAL BOTH FROM FALLING THROUGH THE HOLE ONTO THE PYROMETER, AND SIGHTING THE METAL BATH THROUGH SAID HOLE.
Claim 2
Independent Claim
93 words
A METHOD OF MEASURING THE METAL BATH TEMPERATURE DURING THE REFINING PROCESS IN A CONVERTER, COMPRISING THE STEPS OF ALIGNING AN OPTICAL PYROMETER WITH A TUYERE HOLE OF THE CONVERTER, FLUID-TIGHTLY ISOLATING SAID TUYERE HOLE FROM BLAST AIR DIRECTED INTO THE CONVERTER SO THAT NO AIR PASSES THERETHROUGH, DIRECTING A CHEMICALLY INERT GAS BLAST INTO SAID TUYERE HOLE AT A PRESSURE SUFFICIENT TO PRE VENT BLAST AIR FROM REACHING THE HOLE AND TO PREVENT THE METAL BOTH FROM FALLING THROUGH THE HOLE ONTO THE PYROMETER, AND SIGHTING THE METAL BATH THROUGH SAID HOLE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |