US3776532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for plugging the pour of rotating reactors
Assignee: Centro Sperimentale Metallurgico SpA
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Filing: 1972-04-04
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Granted: 1973-12-04
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Expires: 1992-04-04
Abstract
Abstract A device for plugging the taphole of reactors for metallurgical processes, of rotating and/or oscillating type; comprising in combination a plug having an essentially frusto-conical shape; a tail piece, fixed to the greater base of the plug and substantially perpendicular thereto, having its free end folded in order to allow the plug to be operated; a rod rigid with, and perpendicular to, the minor base of the plug, the free end of which is so shaped as to allow its anchoring to the locking member of the plug; a member for locking the plug on the taphole located on the outer edge of the hole itself and co-operating with the end of said rod, said member being easily removable and apt to be reused.
Inventors
- 👤 B Imberti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:26
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4653; F; F27; F27D; F27D3/00; F27D3/15; F27D3/1509
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
126 words
A device for plugging the taphole of reactors for metallurgical processes, of rotating and/or oscillating type, comprising in combination: a plug having an essentially frusto-conical shape; a tail piece, fixed to the greater base of the plug and substantially perpendicular thereto, having its free end bent in order to allow the plug to be operated; a rod fixed to, and perpendicular to, the minor base of the plug, the free end of which is so shaped as to allow its anchoring to a locking member for the plug; a member for locking the plug on the taphole, located on the outer edge of the hole itself and cooperating with said free end of the aforesaid rod, said member being easily removable and apt to be re-used.
Claim 2
Independent Claim
126 words
A device for plugging the taphole of reactors for metallurgical processes, of rotating and/or oscillating type, comprising in combination: a plug having an essentially frusto-conical shape; a tail piece, fixed to the greater base of the plug and substantially perpendicular thereto, having its free end bent in order to allow the plug to be operated; a rod fixed to, and perpendicular to, the minor base of the plug, the free end of which is so shaped as to allow its anchoring to a locking member for the plug; a member for locking the plug on the taphole, located on the outer edge of the hole itself and cooperating with said free end of the aforesaid rod, said member being easily removable and apt to be re-used.
Claim 3
Dependent Claim
23 words
A device as claimed in claim 1, characterized in that the plug has a substantially frusto-conical shape and consists of one single piece.
Claim 4
Dependent Claim
36 words
A device as claimed in claim 1, characterized in that the plug consists of an inner core having a frusto-conical shape and of an outer frusto-conical ring, which is rendered adherent to the core by sticking.
Claim 5
Dependent Claim
32 words
A device as claimed in claim 1; characterized in that the semi angle Alpha at the apex of the cone wherefrom the plug is ideally obtained, is comprised between 10* and 60*.
Claim 6
Dependent Claim
44 words
A device as claimed in claim 4, characterized in that calling D the diameter of the greater base of the plug and d the actual diameter of the inner orifice of the pour, the D/d ratio is comprised in the interval 1.1 - 2.
Claim 7
Dependent Claim
38 words
A device as claimed in claim 5, characterized in that, calling L the height of the frusto-cone forming the plug, said height will be determined in compliance with the relation: L (0.1 to 2). d . ctg Alpha
Claim 8
Dependent Claim
53 words
A plugging device as claimed in claim 6, characterized in that calling delta and h, respectively, the diameter of the base of the flattened cylinder forming a possible stop abutment for the plug, and the height of said cylinder, are valid the relations: delta (0.12 to 1.5) D h (0.1 to 0.5) d
Claim 9
Dependent Claim
34 words
A plugging device as claimed in claim 1, characterized in that the plug is made of refractory material and/or it is partially or totally enclosed in a metal sheath and/or coated with tarry substances.
Claim 10
Dependent Claim
29 words
A plugging device as claimed in claim 1, characterized in that the rod is made of metal and its cross sectional shape is circular or it has whatever form.
Claim 11
Dependent Claim
38 words
A plugging device as claimed in claim 9, characterized in that the ratio between the cross sectional area of the rod and that of the nominal cross sectional area of the taphole is comprised between 0.0014 and 0.2.
Claim 12
Dependent Claim
97 words
A plugging device as cLaimed in claim 1, characterized in that the locking member, metallic and elastic, is substantially U-shaped, wherein: the arm resting diametrically on the outer edge of the taphole has a width sufficient to ensure for the member itself a stable rest surface and, in correspondence with the centre of the pour, is so shaped as to allow the passage of the rod of the plug, and the other arm is so shaped as to be able to be coupled with the end of said rod, in correspondence with the centerline of the taphole.
Claim 13
Dependent Claim
45 words
A plugging device as claimed in claim 11, characterized in that the locking member is a wedge, having a length greater than the diameter of the outer orifice of the taphole, co-operating in whatever way with the free end of the rod of the plug.
References Cited (Backward Citations)
US3398945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |