US3186471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid fuel injection apparatus for blast furnace
Assignee: Bethlehem Steel Corp
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Filing: 1962-08-07
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Granted: 1965-06-01
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Expires: 1982-08-07
Abstract
No abstract record available.
Inventors
- 👤 Earl A Costenbader
- 👤 Patrick G Durkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:33
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/16; C21B5/00; C21B5/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A FUEL INJECTION DEVICE COMPRISING: (A) A HOLLOW BLOWPIPE SHELL, (B) MEANS FORMING A FIRST CYLINDER PASSAGE EXTENDING FORWARDLY AT AN ANGLE THROUGH THE WALL OF SAID BLOWPIPE, (C) A SLEEVE MOUNTED ON SAID BLOWPIPE SHELL HAVING A SECOND CYLINDRICAL PASSAGE THERETHROUGH IN ALIGNMENT WITH AND COMMUNICATION WITH SAID FIRST PASSAGE AND HAVING A CONICALLY FLARED SEAT PORTION THEREIN AT THE OUTER END OF SAID SECOND PASSAGE, (D) A SLIDABLY INSERTABLE AND REMOVABLY PIPE NOZZLE EXTENDING THROUGH BOTH SAID PASSAGES, (E) A CONCIAL COLLAR CONCENTRICALLY ATTACHED TO SAID PIPE AND SEATED IN SAID CONICALLY FLARE END PORTION IN FLUID TIGHT RELATION THEREWITH, AND (F) ADJUSTABLE WEDGE MEANS PUSHING THE CONICAL COLLAR INTO SUBSTANTIALLY GASTIGHT ENGAGEMENT WITH THE FLARED END PORTION AND RELEASABLY SECURING SAID COLLAR WITHIN THE FLARED PORTION.
Claim 2
Dependent Claim
129 words
A FUEL INJECTION DEVICE COMPRISING: (A) A HOLLOW BLOWPIPE SHELL, (B) MEANS FORMING A FIRST CYLINDER PASSAGE EXTENDING FORWARDLY AT AN ANGLE THROUGH THE WALL OF SAID BLOWPIPE, (C) A SLEEVE MOUNTED ON SAID BLOWPIPE SHELL HAVING A SECOND CYLINDRICAL PASSAGE THERETHROUGH IN ALIGNMENT WITH AND COMMUNICATION WITH SAID FIRST PASSAGE AND HAVING A CONICALLY FLARED SEAT PORTION THEREIN AT THE OUTER END OF SAID SECOND PASSAGE, (D) A SLIDABLY INSERTABLE AND REMOVABLY PIPE NOZZLE EXTENDING THROUGH BOTH SAID PASSAGES, (E) A CONCIAL COLLAR CONCENTRICALLY ATTACHED TO SAID PIPE AND SEATED IN SAID CONICALLY FLARE END PORTION IN FLUID TIGHT RELATION THEREWITH, AND (F) ADJUSTABLE WEDGE MEANS PUSHING THE CONICAL COLLAR INTO SUBSTANTIALLY GASTIGHT ENGAGEMENT WITH THE FLARED END PORTION AND RELEASABLY SECURING SAID COLLAR WITHIN THE FLARED PORTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |