US3608881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuyere apparatus for using liquid fuel in the fuming process
Assignee: KOMBINAT ZA ZVETNI METALI
•
Filing: 1967-03-24
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Granted: 1971-09-28
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Expires: 1987-03-24
Abstract
Abstract A tuyere is provided for feeding liquid fuel, under a pressure of about 15 atmospheres, and air into a slag formed in nonferrous processes.
Inventors
- 👤 Yordan Todorov Yordanov
- 👤 Georgi Ivanov Abrashev
- 👤 Georgi Tenev Georgiev
- 👤 Velyo Dimitrov Zhekov
- 👤 Yancho Hristov Yanev
- 👤 Ivan Georgiev Rossenov
- 👤 Velcho Angelov Prodanov
- 👤 Yordan Todev Roussev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:36
CPC Classifications
C; C21; C21B; C21B5/00; C21B5/001
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
141 words
A tuyere comprising a pipe, a nozzle adapted for receiving fuel and discharging the same into said pipe, a body through which said nozzle extends and between which an annular passage is confined, means to supply air to said annular passage upstream of said nozzle and in immediate proximity therewith, and extension mounted on said body between said pipe and body and into which said nozzle extends, said annular passage tapering in said extension, a part mounted on said body and provided with a bore, a stem supporting said nozzle and including an enlarged part mounted in the latter said bore and a pipe union mounted perpendicularly on the first said part for delivering liquid fuel into the latter said bore, said stem having diametral openings which open into the latter said bore for the passage of fuel to said nozzle.
Claim 2
Dependent Claim
141 words
A tuyere comprising a pipe, a nozzle adapted for receiving fuel and discharging the same into said pipe, a body through which said nozzle extends and between which an annular passage is confined, means to supply air to said annular passage upstream of said nozzle and in immediate proximity therewith, and extension mounted on said body between said pipe and body and into which said nozzle extends, said annular passage tapering in said extension, a part mounted on said body and provided with a bore, a stem supporting said nozzle and including an enlarged part mounted in the latter said bore and a pipe union mounted perpendicularly on the first said part for delivering liquid fuel into the latter said bore, said stem having diametral openings which open into the latter said bore for the passage of fuel to said nozzle.
Claim 3
Dependent Claim
35 words
A tuyere as claimed in claim 1 wherein said means is provided with a straight bore for the passage of air, said straight bore opening into said annular passage at an angle of about 45*.
Claim 4
Dependent Claim
18 words
A tuyere as claimed in claim 2 wherein said means comprises a stuffing box containing said straight bore.
Claim 5
Dependent Claim
21 words
A tuyere as claimed in claim 1 wherein said stem is supported cantilever fashion in said body without external support thereby.
Claim 6
Dependent Claim
26 words
A tuyere as claimed in claim 1 wherein said pipe and extension have a combined length at least as great as the length of said stem.
Claim 7
Dependent Claim
25 words
A tuyere as claimed in claim 1 comprising means detachably connecting said pipe to said extension and means detachably connecting said extension to said body.
References Cited (Backward Citations)
US3076642A
Cited
US3395910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |