US3351289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for applying a protective refractory coating to the refractory linings of basic oxygen furnaces
Assignee: Quigley Co Inc
•
Filing: 1965-05-06
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Granted: 1967-11-07
•
Expires: 1985-05-06
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Demaison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:13
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/44; C21C5/441; C21C5/443
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
AN APPARATUS FOR APPLYING A PROTECTIVE REFRACTORY COATING TO THE REFRACTORY LINING OF A BASIC OXYGEN FURNACE WHILE ITS IS AT OR NEAR OPERATING TEMPERATURE IN ORDER TO PROLONG THE LIFE OF SAID LINING, COMPRISING IN COMBINATION, A LONG RIGID SHOOTING PIPE FOR THE REFRACTORY COATING MATERIAL EQUIPPED WITH A SUITABLE DISCHARGE NOZZLE, A LONG RIGID SUPPORT FOR THE SHOOTING PIPE CAPABLE OF WITHSTANDING THE FURNACE HEAT AND ADAPTED TO BE MOVED ENDWISE INTO AND OUT OF THE FURNACE WHEN THE LATTER OCCUPIES A SUBSTANTIALLY HORIZONTAL POSITION, THE LENGTH OF SAID SUPPORT BEING SUBSTANTIALLY EQUAL TO THE LENGTH OF THE FURNACE LINING A MOBILE FRAME CARRYING SAID SUPPORT AND LOCATED ON A PLATFORM IN PROXIMITY TO THE FURNACE, SAID SUPPORT EXTENDING LONGITUDINALLY OF THE MOBILE FRAME AND WHEN LOCATED OUT OF THE FURNACE PROJECTING TOWARD THE FURNACE FOR A SUBSTANTIAL DISTANCE FROM THE FURNACE CONFRONTING END OF THE MOBILE FRAME, AND SAID MOBILE FRAME BEING FREELY MANEUVERABLE ON THE PLATFORM TO LOCATE THE SHOOTING PIPE SUPPORT IN POSITION TO ENTER THE FURNACE AT DIFFERENT ANGLES AND THEN MOVABLE TOWARD AND FROM THE FURNACE IN EFFECTING THE MOVEMENTS OF THE SUPPORT INTO AND OUT OF THE FURNACE.
Claim 2
Independent Claim
196 words
AN APPARATUS FOR APPLYING A PROTECTIVE REFRACTORY COATING TO THE REFRACTORY LINING OF A BASIC OXYGEN FURNACE WHILE ITS IS AT OR NEAR OPERATING TEMPERATURE IN ORDER TO PROLONG THE LIFE OF SAID LINING, COMPRISING IN COMBINATION, A LONG RIGID SHOOTING PIPE FOR THE REFRACTORY COATING MATERIAL EQUIPPED WITH A SUITABLE DISCHARGE NOZZLE, A LONG RIGID SUPPORT FOR THE SHOOTING PIPE CAPABLE OF WITHSTANDING THE FURNACE HEAT AND ADAPTED TO BE MOVED ENDWISE INTO AND OUT OF THE FURNACE WHEN THE LATTER OCCUPIES A SUBSTANTIALLY HORIZONTAL POSITION, THE LENGTH OF SAID SUPPORT BEING SUBSTANTIALLY EQUAL TO THE LENGTH OF THE FURNACE LINING A MOBILE FRAME CARRYING SAID SUPPORT AND LOCATED ON A PLATFORM IN PROXIMITY TO THE FURNACE, SAID SUPPORT EXTENDING LONGITUDINALLY OF THE MOBILE FRAME AND WHEN LOCATED OUT OF THE FURNACE PROJECTING TOWARD THE FURNACE FOR A SUBSTANTIAL DISTANCE FROM THE FURNACE CONFRONTING END OF THE MOBILE FRAME, AND SAID MOBILE FRAME BEING FREELY MANEUVERABLE ON THE PLATFORM TO LOCATE THE SHOOTING PIPE SUPPORT IN POSITION TO ENTER THE FURNACE AT DIFFERENT ANGLES AND THEN MOVABLE TOWARD AND FROM THE FURNACE IN EFFECTING THE MOVEMENTS OF THE SUPPORT INTO AND OUT OF THE FURNACE.
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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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |