US4361315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sonde apparatus for blast furnace
Assignee: Nippon Steel Corp
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Filing: 1980-12-05
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Granted: 1982-11-30
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Expires: 2000-12-05
Abstract
Abstract Sonde apparatus for a blast furnace whose wall is provided with a lance ingress and egress port through which a lance is able to enter into the furnace and withdraw therefrom wherein a gas check valve, lance cutting means, lance cooling means, lance straightening means, and gas seal means are provided in succession and in communication with one another, and drive means for inserting and withdrawing the lance is further provided in succession therewith, all said elements being arranged along a line which is an extension of the axis of the lance ingress and egress port.
Inventors
- 👤 Toyota Kajihara
- 👤 Atsushi Kawasaki
- 👤 Fujikazu Nishio
- 👤 Akira Esaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:07
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
A sonde apparatus for a blast furnace comprising: a blast furnace gas cut-off valve, a tubular lance straightening means and a gas seal means provided in succession and in communication with one another on a straight support line extending outwardly from a tubular lance ingress and egress port means, said gas seal means preventing furnace gas counterflow from said furnace and disposed on a refractory wall of said blast furnace; a lance ingress and egress drive means also provided in succession on said straight support line; and a tubular lance for detecting and measuring at least one condition existing within said blast furnace; wherein said lance is removably carried by said ingress and egress drive means from said furnace.
Claim 2
Dependent Claim
119 words
A sonde apparatus for a blast furnace comprising: a blast furnace gas cut-off valve, a tubular lance straightening means and a gas seal means provided in succession and in communication with one another on a straight support line extending outwardly from a tubular lance ingress and egress port means, said gas seal means preventing furnace gas counterflow from said furnace and disposed on a refractory wall of said blast furnace; a lance ingress and egress drive means also provided in succession on said straight support line; and a tubular lance for detecting and measuring at least one condition existing within said blast furnace; wherein said lance is removably carried by said ingress and egress drive means from said furnace.
Claim 3
Dependent Claim
19 words
A sonde apparatus as in claim 1, further comprising a tubular lance cooling means for cooling said tubular lance.
Claim 4
Dependent Claim
33 words
A sonde apparatus for a blast furnace as claimed in claims 1 or 2, wherein a tubular lance cutting means is installed next to said gas cut-off valve on said straight support line.
References Cited (Backward Citations)
US3632100A
Cited
JPS5399006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-29 | 1986-05-31 | 1986-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-29 | 1990-05-31 | 1990-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-29 | 1994-05-31 | 1994-11-30 | $7700.00 | Window Closed / Lapsed |