US3122813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible form for repairing the oxygen lance holes in open hearth furnace roofs
Assignee: Quigley Co Inc
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Filing: 1960-12-09
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Granted: 1964-03-03
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Expires: 1980-12-09
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Demaison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:16
CPC Classifications
F; F27; F27D; F27D99/00; F23; F23M; F23M5/00; F23M5/06; F27B; F27B3/00; F27B3/10; F27D1/00; F27D1/16; F27D3/00; F27D3/16; F27D1/1626; F27D2001/1605; F27D2001/1615; F27D21/00; F27D21/02; F27D2021/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A FLEXIBLE FORM FOR REPAIRING WITH REFRACTORY MATERIAL A DAMAGED HOLE IN AN OPEN HEARTH FURNACE ROOF COMPOSED OF REFRACTORY BRICKS WHILE THE FURNACE IS IN OPERATION, SAID FORM COMPRISING A PLURALITY OF SEPARATE AND DISTINCT FLEXIBLE RESILENT METAL BLADES DECREASES IN WIDTH FROM ONE END TO THE OTHER, AND A STEM UPON WHICH THE BLADES ARE INDIVDUALLY MOUNTED AT THEIR NARROW ENDS FOR MOVEMENT FROM A NESTED COLLAPSED POSTION INTO A FULLY EXPANDED POSITION, SAID BLADES IN THEIR COLLAPSED POSITION BEING INSERTABLE BY MEANS OF THE MOUNTING STEM THROUGH THE DAMAGED HOLE IN THE FURNACE ROOF FROM THE OUTSIDE AND THEN MOVABLE INTO THEIR FULLY EXPANDED POSITION AFTER INSERTION TO COVER THE DAMAGED ROOF HOLE ON THE INSIDE OF THE FURNACE FROM THE STEM OUTWARDLY, SAID BLADES IN THEIR FULLY EXPANDED POSITION ACTING AS A TEMPORARY SUPPORT FOR THE REFRACTORY MATEIAL USED IN FILLING THE CAVITY CREATED BY THE STEM AND THE REFRACTORY WALL OF THE DAMAGED HOLE.
Claim 2
Dependent Claim
159 words
A FLEXIBLE FORM FOR REPAIRING WITH REFRACTORY MATERIAL A DAMAGED HOLE IN AN OPEN HEARTH FURNACE ROOF COMPOSED OF REFRACTORY BRICKS WHILE THE FURNACE IS IN OPERATION, SAID FORM COMPRISING A PLURALITY OF SEPARATE AND DISTINCT FLEXIBLE RESILENT METAL BLADES DECREASES IN WIDTH FROM ONE END TO THE OTHER, AND A STEM UPON WHICH THE BLADES ARE INDIVDUALLY MOUNTED AT THEIR NARROW ENDS FOR MOVEMENT FROM A NESTED COLLAPSED POSTION INTO A FULLY EXPANDED POSITION, SAID BLADES IN THEIR COLLAPSED POSITION BEING INSERTABLE BY MEANS OF THE MOUNTING STEM THROUGH THE DAMAGED HOLE IN THE FURNACE ROOF FROM THE OUTSIDE AND THEN MOVABLE INTO THEIR FULLY EXPANDED POSITION AFTER INSERTION TO COVER THE DAMAGED ROOF HOLE ON THE INSIDE OF THE FURNACE FROM THE STEM OUTWARDLY, SAID BLADES IN THEIR FULLY EXPANDED POSITION ACTING AS A TEMPORARY SUPPORT FOR THE REFRACTORY MATEIAL USED IN FILLING THE CAVITY CREATED BY THE STEM AND THE REFRACTORY WALL OF THE DAMAGED HOLE.
References Cited (Backward Citations)
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US503079A
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US1316297A
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US1703656A
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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) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |