Patent US3737489A successfully refreshed from Google Patents.
US3737489A
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Method of applying refractory lining on hot metallurgical ladles,soaking pits and furnaces
Assignee: Air Repair Inc
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Filing: 1970-10-01
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Granted: 1973-06-05
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Expires: 1990-10-01
Abstract
Abstract ABOUT 4% OF AN ORGANIC BINDER, FROM ABOUT 40% TO 70% OF CLAY, AND FROM ABOUT 28% TO ABOUT 58% QUARTZITE. TO FACILITATE ITS APPLICATION, THE REFRACTORY MIXTURE IS MIXED WITH ABOUT 4% TO 6% WATER. A METHOD FOR RELINING METALLURGICAL LADLES, SOAKING PITS, AND FURANCES AT TEMPERATURES FROM ABOUT 400* TO ABOUT 3000*F. BY POPELLING A MIXTURE OF REFRACTORY MATERIALS AGAINST A PRIOR-EXISTING LINING WITHOUT PRIOR COOLING THEREOF, THE RELINING THICKNESS BEING FROM ABOUT 1/4 INCH UP TO 10 INCHES OR MORE. THE REFRACTORY MIXTURE CONSISTS ESSENTIALLY OF, BY WEIGHT, FROM ABOUT 1/14% TO
Inventors
- 👤 C Murton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:38
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/626; C04B35/63; C04B35/632; C04B35/634; B; B22; B22C; B22C15/00; B22C15/20; B22D; B22D41/00; B22D41/02; C04B35/66; F; F27; F27D; F27D1/00; F27D1/16; F27D1/1636; F27D1/1673; C04B2111/00; C04B2111/00034; C04B2111/00146; C04B2111/00155; C04B2111/00474; C04B2111/0087; C04B2111/72; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/34; C04B2235/3418; C04B2235/70; C04B2235/96; C04B2235/9669; C04B2235/9676
Claims Analysis
Total Claims: 0
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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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |