US3101384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuyere arrangement
Assignee: Arcelor Luxembourg SA
•
Filing: 1961-05-01
•
Granted: 1963-08-20
•
Expires: 1981-05-01
Abstract
No abstract record available.
Inventors
- 👤 Metz Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:26
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4606
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
METALLURGICAL REFINING APPARATUS COMPRISING AN OUTER MEMBER FORMED FROM TWO SUBSTANTIALLY CONCENTRIC CYLINDERS JOINED TOGETHER AT TERMINAL PORTIONS THEREOF, A COOLING MEDIUM CARRIED BETWEEN SAID CYLINDERS, AN INTERMEDIATE SUBSTANTIALLY CYLINDRICAL MEMBER CARRIED CONCENTRICALLY WITHIN SAID OUTER MEMBER AND CONTACTING AT AN OUTER TERMINAL PORTION THEREOF AN INNER TERMINAL PORTION OF THE INNER ONE OF SAID TWO CONCENTRIC CYLINDERS, AND AN ABRASION AND CORROSION-PROOF TUYERE MEMBER CARRIED CONCENTRICALLY WITHIN AND POSITIONED AGAINST AND SUPPORTED BY SAID INTERMEDIATE CYLINDRICAL MEMBER.
Claim 2
Dependent Claim
78 words
METALLURGICAL REFINING APPARATUS COMPRISING AN OUTER MEMBER FORMED FROM TWO SUBSTANTIALLY CONCENTRIC CYLINDERS JOINED TOGETHER AT TERMINAL PORTIONS THEREOF, A COOLING MEDIUM CARRIED BETWEEN SAID CYLINDERS, AN INTERMEDIATE SUBSTANTIALLY CYLINDRICAL MEMBER CARRIED CONCENTRICALLY WITHIN SAID OUTER MEMBER AND CONTACTING AT AN OUTER TERMINAL PORTION THEREOF AN INNER TERMINAL PORTION OF THE INNER ONE OF SAID TWO CONCENTRIC CYLINDERS, AND AN ABRASION AND CORROSION-PROOF TUYERE MEMBER CARRIED CONCENTRICALLY WITHIN AND POSITIONED AGAINST AND SUPPORTED BY SAID INTERMEDIATE CYLINDRICAL MEMBER.
References Cited (Backward Citations)
FR636426A
Cited
US2023025A
Cited
US2339623A
Cited
US2829960A
Cited
US2828956A
Cited
FR1247884A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |