US3687093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace wall construction
Assignee: Stemcor Corp
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Filing: 1971-05-12
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Granted: 1972-08-29
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Expires: 1991-05-12
Abstract
Abstract A lining for a furnace having a metal wall is held in place by tubular ceramic anchors and metal bushings fitting therein and secured, by welding or other means, to the metal wall. The ceramic anchors and bushings have interengaging portions holding the anchors on the wall. The anchors, before they are secured to the wall are inserted through a hole in a ceramic insulating and/or refractory body, which may be lamellar, and have such engagement with the body as to support it and hold it in place.
Inventors
- 👤 Carlisle O Byrd Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:09
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/0003; F27D1/0006; F27D1/0009; F27D1/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
114 words
A furnace wall construction comprising an underlying metal surface; a ceramic body superimposed on said underlying surface, said body having an inner face adjacent said underlying surface and an outer face, and having an opening extending from said inner face at least partially through said body; a tubular ceramic anchor extending through at least a portion of said opening; and a metal bushinG within said anchor and attached to said underlying surface; said anchor and said bushing having interengaging means holding said anchor against said underlying surface when said bushing is attached to said underlying surface, and said anchor having means engaging said body for retaining it in superimposed position on said underlying surface.
Claim 2
Dependent Claim
114 words
A furnace wall construction comprising an underlying metal surface; a ceramic body superimposed on said underlying surface, said body having an inner face adjacent said underlying surface and an outer face, and having an opening extending from said inner face at least partially through said body; a tubular ceramic anchor extending through at least a portion of said opening; and a metal bushinG within said anchor and attached to said underlying surface; said anchor and said bushing having interengaging means holding said anchor against said underlying surface when said bushing is attached to said underlying surface, and said anchor having means engaging said body for retaining it in superimposed position on said underlying surface.
Claim 3
Dependent Claim
22 words
A furnace wall construction as set forth in claim 1 in which said bushing is attached to said underlying surface by welding.
Claim 4
Dependent Claim
26 words
A furnace wall construction as set forth in claim 1 in which at least a portion of one of the walls of said anchor is bevelled.
Claim 5
Dependent Claim
31 words
A furnace wall construction as set forth in claim 1 in which said bushing has a flared outer wall surface which is engaged by an internal bevelled portion of said anchor.
Claim 6
Dependent Claim
25 words
A furnace wall construction as set forth in claim 1 in which said means for engaging said body is a bevelled portion of said anchor.
Claim 7
Dependent Claim
26 words
A furnace wall construction as set forth in claim 1 in which said anchor has an outwardly projecting portion at or adjacent to its outer end.
Claim 8
Dependent Claim
20 words
A furnace wall construction as set forth in claim 6 in which said outwardly extending portion is an annular flange.
Claim 9
Dependent Claim
17 words
A furnace wall construction as set forth in claim 1 in which said anchor has flared walls.
Claim 10
Dependent Claim
25 words
A furnace wall construction as set forth in claim 1 in which the length of said anchor is less than the thickness of said body.
Claim 11
Dependent Claim
23 words
A furnace wall construction as set forth in claim 9 in which a plug is provided in said opening outwardly of said anchor.
Claim 12
Dependent Claim
19 words
A furnace wall construction as set forth in claim 1 in which said body comprises a plurality of layers.
Claim 13
Dependent Claim
32 words
A furnace wall construction as set forth in claim 11 in which said anchor extends through at least one layer and at least a portion of the outer one of said layers.
Claim 14
Dependent Claim
151 words
A furnace wall construction comprising an underlying surface, a multilayer ceramic body superimposed on said underlying surface, said body having an inner face adjacent said underlying surface and an outer face, and having an opening extending from said inner face at least partially into the outer one of said layers; a tubular ceramic anchor in said opening extending from said underlying surface through at least a portion of each of said layers, said anchor having a projecting bevelled portion engaging said body for retaining it in superimposed position on said underlying surface; a metal bushing within said anchor secured to said underlying surface, and ceramic means within said opening outwardly of said bushing whereby to protect said bushing from direct exposure to furnace temperature; said anchor and said bushing having interengaging bevelled portions whereby said anchor is held against said underlying surface when said bushing is attached to said underlying surface.
Claim 15
Dependent Claim
151 words
A furnace wall construction comprising an underlying surface, a multilayer ceramic body superimposed on said underlying surface, said body having an inner face adjacent said underlying surface and an outer face, and having an opening extending from said inner face at least partially into the outer one of said layers; a tubular ceramic anchor in said opening extending from said underlying surface through at least a portion of each of said layers, said anchor having a projecting bevelled portion engaging said body for retaining it in superimposed position on said underlying surface; a metal bushing within said anchor secured to said underlying surface, and ceramic means within said opening outwardly of said bushing whereby to protect said bushing from direct exposure to furnace temperature; said anchor and said bushing having interengaging bevelled portions whereby said anchor is held against said underlying surface when said bushing is attached to said underlying surface.
Claim 16
Dependent Claim
23 words
A furnace wall construction as set forth in claim 13 in which said underlying surface is metal and said bushing is welded thereto.
Claim 17
Dependent Claim
18 words
A furnace wall construction as set forth in claim 14 in which said ceramic means is a plug.
Claim 18
Independent Claim
113 words
A method of installing a lining on a metal furnace wall which comprises: providing a body of refractory and/or insulating material, said body having an inner face and an outer face; forming an opening through said body; inserting into said opening from the outer face of said body a tubular ceramic anchor having an outer portion engaging a portion of said body, said anchor being of such length as to engage said metal wall at its inner end; inserting a metal bushing into said tubular anchor; and securing said bushing to said metal wall, said bushing and anchor having interengaging means whereby the inner end of said anchor is held against said wall.
Claim 19
Independent Claim
113 words
A method of installing a lining on a metal furnace wall which comprises: providing a body of refractory and/or insulating material, said body having an inner face and an outer face; forming an opening through said body; inserting into said opening from the outer face of said body a tubular ceramic anchor having an outer portion engaging a portion of said body, said anchor being of such length as to engage said metal wall at its inner end; inserting a metal bushing into said tubular anchor; and securing said bushing to said metal wall, said bushing and anchor having interengaging means whereby the inner end of said anchor is held against said wall.
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |