US3618834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding gate closure for bottom-pour vessel removable as a unit
Assignee: United States Steel Corp
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Filing: 1969-05-26
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Granted: 1971-11-09
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Expires: 1989-05-26
Abstract
Abstract A sliding gate closure which includes a replaceable orifice plate positioned in a fixed relation to a removable mounting plate. Blank gates and nozzle gates are supported on entrance and exit rails depending from the mounting plate, and on levers pivoted to the mounting plate in the space between the ends of the rails opposite the outlet from the vessel. Levers are spring actuated and can be adjusted individually beforehand and the position of adjustment maintained through changes of orifice plate.
Inventors
- 👤 Earl P Shapland Jr
- 👤 James T Shapland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:21
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/14; B22D41/22; B22D41/24
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
190 words
The combination, with a bottom-pour vessel which has a nozzle in its bottom wall, of a closure mechanism for said nozzle, said mechanism comprising: a submounting plate fixed to the underside of said vessel and having an opening beneath said nozzle; a mounting plate removably fixed to the underside of said submounting plate and having an opening beneath said nozzle and horizontally spaced upwardly facing shoulders at the perimeter of the last-named opening; an orifice plate received in said last-named opening and removably resting on said shoulders in a fixed relation to said mounting plate; sealing means overlying said orifice plate; said orifice plate bearing directly against said shoulders and bearing through said sealing means against said submounting plate; gate-supporting means carried by said mounting plate on its underside; a gate slidably supported on said gate-supporting means; and means carried by said vessel for slidably positioning said gate in relation to said orifice plate and nozzle; said orifice plate being removable from said last-named opening from above when said mounting plate is removed from said submounting plate without disturbing the position of said gatesupporting means relative to said mounting plate.
Claim 2
Dependent Claim
190 words
The combination, with a bottom-pour vessel which has a nozzle in its bottom wall, of a closure mechanism for said nozzle, said mechanism comprising: a submounting plate fixed to the underside of said vessel and having an opening beneath said nozzle; a mounting plate removably fixed to the underside of said submounting plate and having an opening beneath said nozzle and horizontally spaced upwardly facing shoulders at the perimeter of the last-named opening; an orifice plate received in said last-named opening and removably resting on said shoulders in a fixed relation to said mounting plate; sealing means overlying said orifice plate; said orifice plate bearing directly against said shoulders and bearing through said sealing means against said submounting plate; gate-supporting means carried by said mounting plate on its underside; a gate slidably supported on said gate-supporting means; and means carried by said vessel for slidably positioning said gate in relation to said orifice plate and nozzle; said orifice plate being removable from said last-named opening from above when said mounting plate is removed from said submounting plate without disturbing the position of said gatesupporting means relative to said mounting plate.
Claim 3
Dependent Claim
185 words
A closure mechanism for a nozzle in the bottom wall of a vessel, said mechanism being formed as a unitary assembly and comprising: a submounting plate adapted to be fixed to the underside of the vessel and having an opening adapted to be positiOned beneath the nozzle; a mounting plate removably fixed to the underside of said submounting plate and having an opening beneath said first-named opening and horizontally spaced upwardly facing shoulders at the perimeter of said last-named opening; an orifice plate received in said last-named opening and removably resting on said shoulders in a fixed relation to said mounting plate; sealing means overlying said orifice plate; said orifice plate bearing directly against said shoulders and bearing through said sealing means against said submounting plate; and means carried by said mounting plate on its underside for supporting gates enabling them to be slidably positioned in relation to said orifice plate; said orifice plate being removable from said last-named opening from above on removal of said mounting plate from said submounting plate without disturbing the position of said gate-supporting means relative to said mounting plate.
Claim 4
Dependent Claim
185 words
A closure mechanism for a nozzle in the bottom wall of a vessel, said mechanism being formed as a unitary assembly and comprising: a submounting plate adapted to be fixed to the underside of the vessel and having an opening adapted to be positiOned beneath the nozzle; a mounting plate removably fixed to the underside of said submounting plate and having an opening beneath said first-named opening and horizontally spaced upwardly facing shoulders at the perimeter of said last-named opening; an orifice plate received in said last-named opening and removably resting on said shoulders in a fixed relation to said mounting plate; sealing means overlying said orifice plate; said orifice plate bearing directly against said shoulders and bearing through said sealing means against said submounting plate; and means carried by said mounting plate on its underside for supporting gates enabling them to be slidably positioned in relation to said orifice plate; said orifice plate being removable from said last-named opening from above on removal of said mounting plate from said submounting plate without disturbing the position of said gate-supporting means relative to said mounting plate.
Claim 5
Dependent Claim
43 words
A combination as defined in claim 1 in which said submounting plate includes an extension lying outside the bottom of said vessel, and the means for slidably positioning said gate includes a fluid-pressure cylinder and ram operated thereby horizontally aligned with said gate.
Claim 6
Dependent Claim
126 words
A combination as defined in claim 1 in which said gate-supporting means includes an opposed pair of entrance rails depending from said mounting plate, an opposed pair of exit rails depending from said mounting plate and being aligned with and spaced from said entrance rails, a plurality of opposed pairs of levers of the first class pivoted to the underside of said mounting plate in the space between the ends of said entrance rails and said exit rails, and spring means urging the outboard ends of said levers downwardly, said spring means being adjustable individually before said mounting plate is installed on said vessel and permitting the position of adjustment to be maintained despite variations in the position of said orifice plate relative to said nozzle.
Claim 7
Dependent Claim
39 words
A combination as defined in claim 4 in which said submounting plate includes an extension lying outside the bottom of said vessel, and comprising in addition a chute supported above said extension for loading gates on said entrance rails.
Claim 8
Dependent Claim
26 words
A combination as defined in claim 4 comprising in addition means in said mounting plate for introducing air to said spring means to cool the latter.
Claim 9
Dependent Claim
24 words
A combination as defined in claim 2 in which said orifice plate if formed of refractory and a throwaway metal frame surrounding said refractory.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |