US3601384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuyeres
Assignee: Individual
•
Filing: 1969-05-09
•
Granted: 1971-08-24
•
Expires: 1989-05-09
Abstract
Abstract Each of the disclosed tuyeres or other tubular members comprises inner and outer tubular elements, preferably in the form of copper castings, having mating cylindrical surfaces. A series of channels are formed in one of said tubular elements along one of said surfaces to provide fluid coolant passages between the tubular elements. The channels are preferably cast into the corresponding element. Connections are provided for fluid coolant conduits. Welded or soldered joints are provided between the elements.
Inventors
- 👤 Lewis H Durdin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:13
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/16
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
170 words
A tuyere for a furnace or the like, including an inner member having a generally cylindrical nozzle passage extending axially therethrough, said inner member having an outer generally cylindrical joint surface, an outer member having an inner generally cylindrical joint surface received around and mating with said outer joint surface of said inner member, at least one of said members having a system of coolant channels formed into the cylindrical joint surface thereof, said channels forming coolant passageways between said members, at least one of said members being formed with entrance and exit ports connecting with said passageways, said outer member having a nose portion including an annular flange directed inwardly and formed with an annular rearwardly facing end surface, said inner member having a forwardly facing annular end surface mating with said rearwardly facing end surface, said flange forming a circular nozzle opening therein aligned with said nozzle passage, and a sealing joint material betwEen said inner and outer members to prevent leakage of the coolant from said passageways.
Claim 2
Dependent Claim
170 words
A tuyere for a furnace or the like, including an inner member having a generally cylindrical nozzle passage extending axially therethrough, said inner member having an outer generally cylindrical joint surface, an outer member having an inner generally cylindrical joint surface received around and mating with said outer joint surface of said inner member, at least one of said members having a system of coolant channels formed into the cylindrical joint surface thereof, said channels forming coolant passageways between said members, at least one of said members being formed with entrance and exit ports connecting with said passageways, said outer member having a nose portion including an annular flange directed inwardly and formed with an annular rearwardly facing end surface, said inner member having a forwardly facing annular end surface mating with said rearwardly facing end surface, said flange forming a circular nozzle opening therein aligned with said nozzle passage, and a sealing joint material betwEen said inner and outer members to prevent leakage of the coolant from said passageways.
Claim 3
Dependent Claim
18 words
A tuyere according to claim 1, in which said rearwardly and forwardly facing end surfaces are frustoconically beveled.
Claim 4
Dependent Claim
16 words
A tuyere according to claim 1, in which said channels are formed in said outer member.
Claim 5
Dependent Claim
16 words
A tuyere according to claim 1, in which said channels are formed in said inner member.
Claim 6
Dependent Claim
15 words
A tuyere according to claim 1, in which said cylindrical joint surfaces are appreciably tapered.
Claim 7
Dependent Claim
16 words
A tuyere according to claim 1, in which said joint material is provided by weld material.
Claim 8
Dependent Claim
16 words
A tuyere according to claim 1, in which said joint material is provided by solder material.
Claim 9
Dependent Claim
14 words
A tuyere according to claim 1, in which said members are made of copper.
Claim 10
Dependent Claim
42 words
A tuyere according to claim 1, in which said outer member has an annular rear end surface, said inner member having a rear portion comprising an outwardly projecting annular flange having an annular front surface mating with said annular rear end surface.
Claim 11
Dependent Claim
166 words
A tuyere for a furnace or the like, including an inner member having a generally cylindrical nozzle passage extending axially therethrough, said inner member having an outer generally cylindrical joint surface, an outer member having an inner generally cylindrical joint surface received around and mating with said outer joint surface of said inner member, said outer member having a system of coolant channels formed into the cylindrical joint surface thereof, said channels forming coolant passageways between said members, said outer member being formed with entrance and exit ports connecting with said passageways, said outer member having a nose portion including an annular flange directed inwardly and formed with an annular frustoconical rearwardly facing end surface, said inner member having a forwardly facing annular frustoconical end surface mating with said rearwardly facing end surface, said flange forming a circular nozzle opening therein aligned with said nozzle passage, and a sealing joint material between said inner and outer members to prevent leakage of the coolant from said passageways.
Claim 12
Dependent Claim
166 words
A tuyere for a furnace or the like, including an inner member having a generally cylindrical nozzle passage extending axially therethrough, said inner member having an outer generally cylindrical joint surface, an outer member having an inner generally cylindrical joint surface received around and mating with said outer joint surface of said inner member, said outer member having a system of coolant channels formed into the cylindrical joint surface thereof, said channels forming coolant passageways between said members, said outer member being formed with entrance and exit ports connecting with said passageways, said outer member having a nose portion including an annular flange directed inwardly and formed with an annular frustoconical rearwardly facing end surface, said inner member having a forwardly facing annular frustoconical end surface mating with said rearwardly facing end surface, said flange forming a circular nozzle opening therein aligned with said nozzle passage, and a sealing joint material between said inner and outer members to prevent leakage of the coolant from said passageways.
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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) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |