US4376501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure element and assembly of a slide closure for use in liquid melt containers
Assignee: Stopinc AG
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Filing: 1981-04-14
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Granted: 1983-03-15
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Expires: 2001-04-14
Abstract
Abstract A closure element of a slide closure includes a refractory plate having a sliding surface, peripheral edges and at least one flow passage extending through the refractory plate from the sliding surface to an opposite surface spaced therefrom. A metallic sheath partially encompasses the refractory plate and includes an edge portion embracing the peripheral edges of the refractory plate about the entire periphery thereof and a bottom portion adjacent the opposite surface of the refractory plate. The bottom portion of the metallic sheath has formed therein a plurality of openings exposing therethrough a plurality of surface areas of the opposite surface of the refractory plate. The plurality of openings are separated from each other and from the edge portion of the metallic sheath by a plurality of strips which thus form the bottom portion. At least some of the exposed surface areas are aligned, preferably parallel, to the sliding surface and form surfaces for engagement with a metal support frame to support the closure element.
Inventors
- 👤 Alfred Hafner
- 👤 Udo Muschner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:33
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/14; B22D41/22; B22D41/28
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
189 words
A closure element of a slide closure for use in liquid melt containers, said closure element comprising: a refractory plate having a sliding surface, peripheral edges, and at least one flow passage extending through said refractory plate from said sliding surface to an opposite surface spaced therefrom; a metallic sheath partially encompassing said refractory plate, said metallic sheath including an edge portion embracing said peripheral edges of said refractory plate about the entire periphery thereof and a bottom portion adjacent said opposite surface of said refractory plate; said bottom portion of said metallic sheath having formed therein a plurality of openings exposing therethrough a plurality of surface areas of said opposite surface of said refractory plate, said openings including one said opening in the area of said flow passage, said plurality of openings being separated from each other and from said edge portion of said metallic sheath by a plurality of strips which thus form said bottom portion; and at least some of said exposed surface areas being aligned relative to said sliding surface and forming means for engagement with a metal support frame for supporting said closure element.
Claim 2
Dependent Claim
189 words
A closure element of a slide closure for use in liquid melt containers, said closure element comprising: a refractory plate having a sliding surface, peripheral edges, and at least one flow passage extending through said refractory plate from said sliding surface to an opposite surface spaced therefrom; a metallic sheath partially encompassing said refractory plate, said metallic sheath including an edge portion embracing said peripheral edges of said refractory plate about the entire periphery thereof and a bottom portion adjacent said opposite surface of said refractory plate; said bottom portion of said metallic sheath having formed therein a plurality of openings exposing therethrough a plurality of surface areas of said opposite surface of said refractory plate, said openings including one said opening in the area of said flow passage, said plurality of openings being separated from each other and from said edge portion of said metallic sheath by a plurality of strips which thus form said bottom portion; and at least some of said exposed surface areas being aligned relative to said sliding surface and forming means for engagement with a metal support frame for supporting said closure element.
Claim 3
Dependent Claim
29 words
A closure element as claimed in claim 1, wherein said sliding surface is planar, and said aligned exposed surface areas are aligned to extend parallel to said sliding surface.
Claim 4
Dependent Claim
29 words
A closure element as claimed in claim 2, wherein said aligned exposed surface areas are aligned in a single plane extending parallel to the plane of said sliding surface.
Claim 5
Dependent Claim
34 words
A closure element as claimed in claim 1, wherein said strips forming said bottom portion of said metallic sheath include a continuous rim strip integral with said edge portion around the entire periphery thereof.
Claim 6
Dependent Claim
41 words
A closure element as claimed in claim 1 or 4, wherein said strips forming said bottom portion of said metallic sheath include inner strips connected to each other to form a network extending over said opposite surface of said refractory plate.
Claim 7
Dependent Claim
24 words
A closure element as claimed in claim 1, wherein said aligned exposed surface areas are formed on projections which extend through respective said openings.
Claim 8
Dependent Claim
31 words
A closure element as claimed in claim 1, wherein said aligned exposed surface areas are at a level inwardly of the outer surface of said bottom portion of said metallic sheath.
Claim 9
Dependent Claim
27 words
A closure element as claimed in claim 7, wherein said opposite surface of said refractory plate comprises a single planar surface including said aligned exposed surface areas.
Claim 10
Dependent Claim
36 words
A closure element as claimed in claim 6 or 7, wherein said aligned exposed surface areas extend in a plane at a level spaced from the outer surface of said bottom portion of said metallic sheath.
Claim 11
Dependent Claim
44 words
A closure element as claimed in claim 1, wherein said one opening exposes an annular zone of said opposite surface of said refractory plate, said annular zone surrounding said flow passage and adapted to be connected to a refractory nozzle extending said flow passage.
Claim 12
Dependent Claim
23 words
A closure element as claimed in claim 10, wherein said annular zone is at the same level as said aligned exposed surface areas.
Claim 13
Dependent Claim
25 words
A closure element as claimed in claim 10, wherein said annular zone is at a level spaced from that of said aligned exposed surface areas.
Claim 14
Dependent Claim
20 words
A closure element as claimed in claim 1, further comprising refractory mortar between said refractory plate and said metallic sheath.
Claim 15
Dependent Claim
200 words
A closure element assembly of a slide closure for use in liquid melt containers, said closure element assembly comprising: a refractory plate having a sliding surface, peripheral edges, and at least one flow passage extending through said refractory plate from said sliding surface to an opposite surface spaced therefrom; a metallic sheath partially encompassing said refractory plate, said metallic sheath including an edge portion embracing said peripheral edges of said refractory plate about the entire periphery thereof and a bottom portion adjacent said opposite surface of said refractory plate; said bottom portion of said metallic sheath having formed therein a plurality of openings exposing therethrough a plurality of surface areas of said opposite surface of said refractory plate, said openings including one said opening in the area of said flow passage, said plurality of openings being separated from each other and from said edge portion of said metallic sheath by a plurality of strips which thus form said bottom portion; at least some of said exposed surface areas being aligned relative to said sliding surface; and a metal support frame having surfaces in planar engagement with said aligned exposed surface areas, thereby supporting said refractory plate and said metallic sheath.
Claim 16
Dependent Claim
200 words
A closure element assembly of a slide closure for use in liquid melt containers, said closure element assembly comprising: a refractory plate having a sliding surface, peripheral edges, and at least one flow passage extending through said refractory plate from said sliding surface to an opposite surface spaced therefrom; a metallic sheath partially encompassing said refractory plate, said metallic sheath including an edge portion embracing said peripheral edges of said refractory plate about the entire periphery thereof and a bottom portion adjacent said opposite surface of said refractory plate; said bottom portion of said metallic sheath having formed therein a plurality of openings exposing therethrough a plurality of surface areas of said opposite surface of said refractory plate, said openings including one said opening in the area of said flow passage, said plurality of openings being separated from each other and from said edge portion of said metallic sheath by a plurality of strips which thus form said bottom portion; at least some of said exposed surface areas being aligned relative to said sliding surface; and a metal support frame having surfaces in planar engagement with said aligned exposed surface areas, thereby supporting said refractory plate and said metallic sheath.
Claim 17
Dependent Claim
29 words
A closure element assembly as claimed in claim 14, wherein said bottom portion of said metallic sheath is spaced from and out of contact with said metal support frame.
Claim 18
Dependent Claim
30 words
A closure element assembly as claimed in claim 14, wherein said sliding surface is planar, and said aligned exposed surface areas are aligned to extend parallel to said sliding surface.
Claim 19
Dependent Claim
30 words
A closure element assembly as claimed in claim 16, wherein said aligned exposed surface areas are aligned in a single plane extending parallel to the plane of said sliding surface.
Claim 20
Dependent Claim
35 words
A closure element assembly as claimed in claim 14, wherein said strips forming said bottom portion of said metallic sheath include a continuous rim strip integral with said edge portion around the entire periphery thereof.
Claim 21
Dependent Claim
42 words
A closure element assembly as claimed in claim 14 or 18, wherein said strips forming said bottom portion of said metallic sheath include inner strips connected to each other to form a network extending over said opposite surface of said refractory plate.
Claim 22
Dependent Claim
25 words
A closure element assembly as claimed in claim 14, wherein said aligned exposed surface areas are formed on projections which extend through respective said openings.
Claim 23
Dependent Claim
22 words
A closure element assembly as claimed in claim 20, wherein said surfaces of said metal support frame are in a single plane.
Claim 24
Dependent Claim
32 words
A closure element assembly as claimed in claim 14, wherein said aligned exposed surface areas are at a level inwardly of the outer surface of said bottom portion of said metallic sheath.
Claim 25
Dependent Claim
25 words
A closure element assembly as claimed in claim 22, wherein said surfaces of said metal support frame are on projections extending through respective said openings.
Claim 26
Dependent Claim
28 words
A closure element assembly as claimed in claim 22, wherein said opposite surface of said refractory plate comprises a single planar surface including said aligned exposed surface areas.
Claim 27
Dependent Claim
37 words
A closure element assembly as claimed in claim 20 or 22, wherein said aligned exposed surface areas extend in a plane at a level spaced from the outer surface of said bottom portion of said metallic sheath.
Claim 28
Dependent Claim
45 words
A closure element assembly as claimed in claim 14, wherein said one opening exposes an annular zone of said opposite surface of said refractory plate, said annular zone surrounding said flow passage and adapted to be connected to a refractory nozzle extending said flow passage.
Claim 29
Dependent Claim
24 words
A closure element assembly as claimed in claim 26, wherein said annular zone is at the same level as said aligned exposed surface areas.
Claim 30
Dependent Claim
26 words
A closure element assembly as claimed in claim 26, wherein said annular zone is at a level spaced from that of said aligned exposed surface areas.
Claim 31
Dependent Claim
21 words
A closure element assembly as claimed in claim 14, further comprising refractory mortar between said refractory plate and said metallic sheath.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-14 | 1986-09-13 | 1987-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-14 | 1990-09-13 | 1991-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-14 | 1994-09-13 | 1995-03-15 | $7700.00 | Window Closed / Lapsed |