US4222337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace lining and method of manufacture
Assignee: Isomax Ingenior OG Handelsaktieselskab
•
Filing: 1978-04-12
•
Granted: 1980-09-16
•
Expires: 1998-04-12
Abstract
Abstract A furnace lining is composed of a plurality of layers of fiber insulation. The innermost layer is formed by stacking flat, elastically-compressible fibrous strips. The stacked strips are compressed and held down in compressed condition by a plurality of anchor members secured to and projecting perpendicularly from the furace wall and extending between selected strips of said innermost layer. The elastic compression applied to the strips creates a frictional grip between the strips and the anchor members, which maintains the lining in a stable mounted position. The lining may also include an intermediate layer between the innermost layer and the furnace wall, this intermediate layer being also formed of superimposed, strips stacked flat upon one another, with the intermediate layer frictionally anchored to the outermost layer.
Inventors
- 👤 Jorgen B. Christiansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:21
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/0003; F27D1/0006; F27D1/0009; F27D1/002
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
211 words
a method of lining the interior surface of a furnace wall with a lining of one or more layers of fiber insulation, including a primary layer adjacent to and exposed to the interior of said furnace, said method comprising the steps of stacking a plurality of flat, elastically compressible fibrous strips in a row parallel to said furnace wall with the flat faces of said strips making flush abutment with each other and extending in planes transverse to the plane of said furnace wall, applying elastic compression to groups of said strips in said row in a direction to decrease the height of each of said groups, providing a plurality of elongated linear anchor members each having at one end a flat face having a width substantially less than the width of said strips, placing upon the uppermost strip of each of said groups of stacked, compressed strips the flat faces of at least one of said anchor members, and securing the other end of each anchor member to said furnace wall, the elastic compression applied to said strips being sufficient to create a frictional grip between adjacent fibrous strips and between said strips and said anchor members, whereby to maintain said lining in a stable mounted position during servicing conditions.
Claim 2
Independent Claim
211 words
a method of lining the interior surface of a furnace wall with a lining of one or more layers of fiber insulation, including a primary layer adjacent to and exposed to the interior of said furnace, said method comprising the steps of stacking a plurality of flat, elastically compressible fibrous strips in a row parallel to said furnace wall with the flat faces of said strips making flush abutment with each other and extending in planes transverse to the plane of said furnace wall, applying elastic compression to groups of said strips in said row in a direction to decrease the height of each of said groups, providing a plurality of elongated linear anchor members each having at one end a flat face having a width substantially less than the width of said strips, placing upon the uppermost strip of each of said groups of stacked, compressed strips the flat faces of at least one of said anchor members, and securing the other end of each anchor member to said furnace wall, the elastic compression applied to said strips being sufficient to create a frictional grip between adjacent fibrous strips and between said strips and said anchor members, whereby to maintain said lining in a stable mounted position during servicing conditions.
Claim 3
Dependent Claim
46 words
A method according to claim 1 which includes the steps of forming said lining of a plurality of adjacent layers of stacked fibrous strips and applying compression with greatest force in the primary layer and with progressively decreasing force in the layers approaching said furnace wall.
Claim 4
Dependent Claim
30 words
A method according to claim 1 which includes the step of applying to at least said primary layer of said lining a non-elastic compression in addition to said elastic compression.
Claim 5
Dependent Claim
21 words
A method according to claim 1 in which said elastic compression is applied in a direction parallel to said furnace wall.
Claim 6
Dependent Claim
20 words
A method according to claim 3 in which said non-elastic compression is applied in a direction lengthwise of said strips.
Claim 7
Independent Claim
62 words
A method according to any one of claims 2 to 5 which includes the steps of attaching fiber strips to the interior surfaces of said furnace which confront the ends of said stacked strips, and pressing the ends of said stacked strips into frictional engagement with said attached fiber strips, whereby to lock the ends of said lining layers to said furnace.
Claim 8
Dependent Claim
28 words
A method according to claim 1 or 5 which includes the additional step of frictionally anchoring together at least two of said adjacent layers of stacked fibrous strips.
Claim 9
Dependent Claim
154 words
A furnace lining assembly comprising a furnace lining made of fibrous ceramic material, and means for anchoring said lining to the inner wall surface of said furnace, said furnace lining including at least one layer formed of a plurality of flat, elastically-compressible fibrous strips stacked upon each other with their flat faces in flush abutment and with said layer under compression, said anchoring means comprising a plurality of elongated, linear members secured to said inner wall surface of said furnace and projecting perpendicularly therefrom, each of said anchor members having a flat free end portion overlying a selected strip of said compressed layer and frictionally gripping the latter, said anchor members being positioned to maintain the underlying strips in said layer under elastic compression sufficiently to create a frictional grip between adjacent fibrous strips and between said strips and anchor members, whereby to maintain said lining in a stable mounted position during servicing conditions.
Claim 10
Dependent Claim
154 words
A furnace lining assembly comprising a furnace lining made of fibrous ceramic material, and means for anchoring said lining to the inner wall surface of said furnace, said furnace lining including at least one layer formed of a plurality of flat, elastically-compressible fibrous strips stacked upon each other with their flat faces in flush abutment and with said layer under compression, said anchoring means comprising a plurality of elongated, linear members secured to said inner wall surface of said furnace and projecting perpendicularly therefrom, each of said anchor members having a flat free end portion overlying a selected strip of said compressed layer and frictionally gripping the latter, said anchor members being positioned to maintain the underlying strips in said layer under elastic compression sufficiently to create a frictional grip between adjacent fibrous strips and between said strips and anchor members, whereby to maintain said lining in a stable mounted position during servicing conditions.
Claim 11
Dependent Claim
73 words
A furnace lining assembly according to claim 8 in which said layer has a hot face facing the interior of said furnace, in which the flat free end portions of said anchor members are sized to grip said strips at points spaced inwardly from said hot face, said layer being formed with a plurality of spaced, parallel tracks in the hot face thereof, said tracks extending transversely to the plane of said strips.
Claim 12
Dependent Claim
65 words
A furnace lining assembly according to claim 8 in which said furnace lining comprises a plurality of layers each composed of stacked fibrous strips and arranged in side-by-side relationship, and means frictionally connecting said layers to each other as a stable unit, the free end portion of said anchor members engaging and gripping the strips of one of said layers other than the outermost layer.
Claim 13
Dependent Claim
46 words
A furnace lining assembly according to claim 8 in which at least some of said anchor members are positioned such that their free end portions extend between adjacent strips in said layer, said free end portions having a length shorter than the width of said strips.
Claim 14
Dependent Claim
38 words
A furnace lining according to claim 11 in which the free end portions of said anchor members are formed with spaced protruding teeth which are pressed into the fibrous body of the strips engaged by said anchor members.
Claim 15
Dependent Claim
54 words
A furnace lining according to claim 8 in which said furnace lining includes a plurality of layers of stacked fibrous strips arranged in side-by-side relationship, selected strips of said layers having a width equal to the combined width of said layers and extending through said layers, whereby to anchor said layers to each other.
Claim 16
Dependent Claim
31 words
A furnace lining according to claim 10 in which said layers are frictionally connected to each other by thin sheets of friction material overlying and connecting aligned strips of said layers.
References Cited (Backward Citations)
US3892396A
Cited
US3993237A
Cited
US3909907A
Cited
US4011394A
Cited
US3930913A
Cited
US4088825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |