US3281135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blast furnace apparatus
Assignee: American Brake Shoe Co
•
Filing: 1963-12-26
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Granted: 1966-10-25
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Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 Frank J Boron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:50
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/16; C21B7/163; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49348
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN A BLOWPIPE ASSEMBLY FOR A BLAST FURNACE WHEREIN GAS FROM A BUSTLE IS INTRODUCED INTO THE FURNACE THROUGH A TUYERE CONNECTED TO THE BUSTLE BY MEANS INCLUDING THE BLOWPIPE, AN ELONGATED BLOWPIPE TUBE OF GENERALLY CYLINDRICAL FORM AFFORDING A PATH FOR GAS FROM THE BUSTLE PIPE TO THE FURNACE TUYERE, A FACE PLATE FOR SUPPORTING ONE END TO THE TUBE, SAID ONE END OF THE TUBE BEING PROVIDED WITH A CONTOUR COMPLEMENTAL TO A SEAT FORMED IN THE FACE PLATE WITH SAID CONTOURED END OF THE TUBE COMPLEMENTALLY FITTED IN SAID SEAT, AND SAID SEAT BEING LINED AT LEAST IN PART WITH A SEPARATE SUBSTANTIALLY ANNULAR INSERT AT THE INTERIOR OF SAID FACE PLATE THEREBY TO CREATE BARRIERS TO THERMAL TRANSFER THROUGH THE FACE PLATE FROM THE INSIDE TO THE OUTSIDE DIAMETER THEREOF.
Claim 2
Dependent Claim
134 words
IN A BLOWPIPE ASSEMBLY FOR A BLAST FURNACE WHEREIN GAS FROM A BUSTLE IS INTRODUCED INTO THE FURNACE THROUGH A TUYERE CONNECTED TO THE BUSTLE BY MEANS INCLUDING THE BLOWPIPE, AN ELONGATED BLOWPIPE TUBE OF GENERALLY CYLINDRICAL FORM AFFORDING A PATH FOR GAS FROM THE BUSTLE PIPE TO THE FURNACE TUYERE, A FACE PLATE FOR SUPPORTING ONE END TO THE TUBE, SAID ONE END OF THE TUBE BEING PROVIDED WITH A CONTOUR COMPLEMENTAL TO A SEAT FORMED IN THE FACE PLATE WITH SAID CONTOURED END OF THE TUBE COMPLEMENTALLY FITTED IN SAID SEAT, AND SAID SEAT BEING LINED AT LEAST IN PART WITH A SEPARATE SUBSTANTIALLY ANNULAR INSERT AT THE INTERIOR OF SAID FACE PLATE THEREBY TO CREATE BARRIERS TO THERMAL TRANSFER THROUGH THE FACE PLATE FROM THE INSIDE TO THE OUTSIDE DIAMETER THEREOF.
References Cited (Backward Citations)
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Cited
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Cited
US1844194A
Cited
US2023025A
Cited
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Cited
US2937018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |