US3645520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Consumable lance
Assignee: Allegheny Ludlum Corp
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Filing: 1970-07-29
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Granted: 1972-02-29
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Expires: 1990-07-29
Abstract
Abstract Described herein is a consumable lance for introducing fluid into a liquid at a controlled angle of introduction as the lance is consumed.
Inventors
- 👤 Thomas R Acre
- 👤 Frederick M Gimbel
- 👤 Sundaresan Ramachandran
- 👤 Thomas F Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:41
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4606; C21C5/4613
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
82 words
A consumable lance for introducing fluid into a liquid at a controlled angle of introduction as the lance is consumed which comprises an exterior housing, at least one continuous conduit through which fluid may be passed disposed within said housing, said continuous conduit being at a controlled acute angle to the longitudinal axis of said lance substantially throughout the consumable portion of the conduit''s length such that as the lance and conduit are consumed, the angle of fluid emergence therefrom is controlled.
Claim 2
Dependent Claim
82 words
A consumable lance for introducing fluid into a liquid at a controlled angle of introduction as the lance is consumed which comprises an exterior housing, at least one continuous conduit through which fluid may be passed disposed within said housing, said continuous conduit being at a controlled acute angle to the longitudinal axis of said lance substantially throughout the consumable portion of the conduit''s length such that as the lance and conduit are consumed, the angle of fluid emergence therefrom is controlled.
Claim 3
Dependent Claim
23 words
A lance according to claim 1 including a plurality of conduits each at said controlled angle throughout the consumable portion of its length.
Claim 4
Dependent Claim
13 words
A lance according to claim 1 wherein said housing comprises a refractory sheath.
Claim 5
Dependent Claim
25 words
A lance according to claim 1 including a spiral having a controlled spiral angle to provide a controlled fluid emergence angle as it is consumed.
Claim 6
Dependent Claim
13 words
A lance according to claim 1 including a zigzagging conduit of controlled angles.
Claim 7
Dependent Claim
15 words
A lance according to claim 1 including a plurality of spiral conduits of controlled angles.
Claim 8
Dependent Claim
12 words
A lance according to claim 1 including a plurality of zigzagging conduits.
Claim 9
Dependent Claim
14 words
A lance according to claim 7 wherein said conduits are in a crisscrossing pattern.
Claim 10
Dependent Claim
15 words
A lance according to claim 1 including a plurality of conduits in an X-shaped pattern.
Claim 11
Dependent Claim
16 words
A lance according to claim 9 wherein said conduits are in a multiple of X-shaped patterns.
Claim 12
Dependent Claim
92 words
A consumable lance for introducing fluid into a volume of molten metal at a controlled angle as the lance is consumed to minimize splashing of said metal, which comprises at least one continuous conduit through which fluid may be passed and a protective housing therefor, said continuous conduit being at a controlled angle of between 15* and 90* to the longitudinal axis of said lance substantially throughout the consumable portion of the circuit conduit''s length such that as the lance and conduit are consumed, the angle of fluid emergence therefrom is controlled.
Claim 13
Dependent Claim
92 words
A consumable lance for introducing fluid into a volume of molten metal at a controlled angle as the lance is consumed to minimize splashing of said metal, which comprises at least one continuous conduit through which fluid may be passed and a protective housing therefor, said continuous conduit being at a controlled angle of between 15* and 90* to the longitudinal axis of said lance substantially throughout the consumable portion of the circuit conduit''s length such that as the lance and conduit are consumed, the angle of fluid emergence therefrom is controlled.
Claim 14
Dependent Claim
51 words
A consumable lance according to claim 11 for introducing a fluid from the group consisting of oxygen and oxygen-containing gas into molten iron and iron alloys which includes a plurality of continuous conduits, each at a controlled angle of between 15* to 90* substantially throughout the consumable portion of its length.
Claim 15
Dependent Claim
13 words
A consumable lance, according to claim 12 wherein said continuous conduits are spiral.
Claim 16
Dependent Claim
24 words
A consumable lance according to claim 12 wherein said conduits zigzag substantially throughout the consumable portion of their lengths and form a crisscrossing pattern.
Claim 17
Dependent Claim
10 words
A consumable lance according to claim 12 including X-shaped conduits.
References Cited (Backward Citations)
US2506598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |