US4348441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous insulating material and insulating wall
Assignee: Isolite Babcock Refractories Co Ltd
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Filing: 1980-09-16
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Granted: 1982-09-07
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Expires: 2000-09-16
Abstract
Abstract Fibrous insulating material consisting of a rectangular or semi-cylindrical block obtained by stacking ceramic fiber blankets or felt in the thickness direction thereof and bonding contact surfaces of adjacent blankets or felt to each other with an adhesive. Such insulating fire material is bonded to the furnace surface such that the bonded surfaces are perpendicular to the wall surface. By using the fibrous insulating material which is ready to handle, it is possible to facilitate and reduce time required for construction of the insulating wall.
Inventors
- 👤 Takeo Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:44
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/0003; F27D1/0006; F27D1/0009; F27D1/002; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/163; Y10T428/164; Y10T428/166; Y10T428/168; Y10T428/18; Y10T428/19; Y10T428/192; Y10T428/21; Y10T428/218; Y10T428/24; Y10T428/24058; Y10T428/24124; Y10T428/24132; Y10T428/24174; Y10T428/24182; Y10T428/24628
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
75 words
A furnace wall construction comprising a furnace wall and a fibrous insulation bonded thereto consisting of an insulating material obtained by stacking ceramic fiber blankets in the thickness direction and bonding together contact surfaces of adjacent fiber blankets by applying adhesive layers to at least one surface of said material, said adhesive being gasified and burnt away at the operating temperature of the furnace, said fibrous insulating material being thereafter bonded to said furnace wall.
Claim 2
Dependent Claim
75 words
A furnace wall construction comprising a furnace wall and a fibrous insulation bonded thereto consisting of an insulating material obtained by stacking ceramic fiber blankets in the thickness direction and bonding together contact surfaces of adjacent fiber blankets by applying adhesive layers to at least one surface of said material, said adhesive being gasified and burnt away at the operating temperature of the furnace, said fibrous insulating material being thereafter bonded to said furnace wall.
Claim 3
Dependent Claim
14 words
A furnace wall according to claim 1 wherein said fibrous insulating material is rectangular.
Claim 4
Dependent Claim
38 words
A furnace wall according to claim 2 wherein said fibrous insulating material is provided on its surface at right angles to said bonded surfaces with said adhesive layers along the four sides and also along said bonded surfaces.
Claim 5
Dependent Claim
14 words
A furnace wall according to claim 1 wherein said fibrous insulating material is semi-cylindrical.
Claim 6
Dependent Claim
18 words
A furnace wall according to claim 1 including joining means between said adhesive layers and said furnace wall.
Claim 7
Dependent Claim
15 words
A furnace wall according to claim 5 wherein said joining means is a metal net.
Claim 8
Dependent Claim
15 words
A furnace wall according to claim 5 wherein said joining means is a metal lath.
Claim 9
Dependent Claim
27 words
A furnace wall according to claim 1 wherein said wall is made of a member of the group consisting of refractory bricks, refractory castables and refractory plastics.
Claim 10
Dependent Claim
53 words
A fibrous ceramic insulation comprising a plurality of ceramic fiber blankets stacked in the thickness direction and bonded together at contact surfaces of adjacent fiber blankets with an organic adhesive layer, said organic adhesive layer being completely gasified at the operating temperature of a furnace having the insulation applied to a wall thereof.
Claim 11
Dependent Claim
53 words
A fibrous ceramic insulation comprising a plurality of ceramic fiber blankets stacked in the thickness direction and bonded together at contact surfaces of adjacent fiber blankets with an organic adhesive layer, said organic adhesive layer being completely gasified at the operating temperature of a furnace having the insulation applied to a wall thereof.
Claim 12
Dependent Claim
13 words
The ceramic insulation of claim 9 wherein said plurality of blankets are rectangular.
Claim 13
Dependent Claim
20 words
The ceramic insulation of claim 10 wherein said insulation has a metal joining material bonded on one major surface thereof.
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) | 1985-09-06 | 1986-03-08 | 1986-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-06 | 1990-03-08 | 1990-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-06 | 1994-03-08 | 1994-09-07 | $7700.00 | Window Closed / Lapsed |