US4202148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making thick-walled refractory fiber modules and the product formed thereby
Assignee: III ACQUIRING Inc CITY OF INDUSTRY CA A CORP OF
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Filing: 1978-06-26
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Granted: 1980-05-13
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Expires: 1998-06-26
Abstract
Abstract A method of making thick-walled heat insulation modules by vacuum accreting ceramic fibers from an aqueous solution onto a mold and the product provided thereby. The dimensionally stable generally rigid modules have a thickness of 3"-8" and a density of 10-12 lbs. per cubic foot and are readily subdivided and/or tailored if desired for overlapping intermeshing assembly to provide a continuous lining for a high temperature chamber withstanding operating temperatures between 1600° and 3,000° F.
Inventors
- 👤 Carl E. Frahme
- 👤 Gary E. Wygant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:02
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/0003; F27D1/0006; F27D1/0009
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
118 words
A lightweight dimensionally-stable, homogeneous, generally non-flexible refractory liner element for lining the wall of a high temperature chamber consisting of: a multiplicity of layers of spun refractory fibers typically having a length of 3 to 6 inches accreted by vacuum deposition to a thickness of 3 to 8 inches from an aqueous slurry of sald fibers and held bonded together by binder material; and at least one corner of said element being deeply rabbeted ship-lap fashion from end-to-end and adapted to mate complementally with the similarly rabbeted corner of another of said elements to form a lining for a high temperature chamber with the planes of said fiber layers lying in planes generally normal to the chamber wall.
Claim 2
Dependent Claim
118 words
A lightweight dimensionally-stable, homogeneous, generally non-flexible refractory liner element for lining the wall of a high temperature chamber consisting of: a multiplicity of layers of spun refractory fibers typically having a length of 3 to 6 inches accreted by vacuum deposition to a thickness of 3 to 8 inches from an aqueous slurry of sald fibers and held bonded together by binder material; and at least one corner of said element being deeply rabbeted ship-lap fashion from end-to-end and adapted to mate complementally with the similarly rabbeted corner of another of said elements to form a lining for a high temperature chamber with the planes of said fiber layers lying in planes generally normal to the chamber wall.
Claim 3
Dependent Claim
20 words
A homogeneous refractory liner element as defined in claim 1 characterized in that diagonally related corners thereof are similarly rabbeted.
Claim 4
Dependent Claim
25 words
A homogeneous refractory liner element as defined in claim 1 characterized in that the diagonally opposed transverse end corners of said element are similarly rabbeted.
Claim 5
Dependent Claim
28 words
A homogeneous refractory liner element as defined in claim 1 characterized in that said element has a density ranging between about 10 to 12 pounds per cubic foot.
Claim 6
Dependent Claim
29 words
A homogeneous refractory liner element as defined in claim 2 characterized in that said rabbets are rectangular in cross-section with the longer dimension thereof lying parallel to one another.
Claim 7
Dependent Claim
97 words
A substantially rigid high temperature refractory liner element consisting of: a multiplicity of vacuum accreted layers of spun ceramic fibers bonded together in a single homogeneous mass having a density of the order of 10-12 pounds per cubic foot and forming a rectangular parallelopiped modified after being vacuum accreted by having one diagonally related pair of its longer corners and one diagonally related pair of its end corners rabbeted from end-to-end and transversely thereof whereby a plurality of said lining elements are adapted to be internested ship-lap fashion to form a continuous gapless refractory furnace chamber lining.
Claim 8
Dependent Claim
97 words
A substantially rigid high temperature refractory liner element consisting of: a multiplicity of vacuum accreted layers of spun ceramic fibers bonded together in a single homogeneous mass having a density of the order of 10-12 pounds per cubic foot and forming a rectangular parallelopiped modified after being vacuum accreted by having one diagonally related pair of its longer corners and one diagonally related pair of its end corners rabbeted from end-to-end and transversely thereof whereby a plurality of said lining elements are adapted to be internested ship-lap fashion to form a continuous gapless refractory furnace chamber lining.
Claim 9
Dependent Claim
29 words
A homogeneous furnace liner element as defined in claim 6 characterized in that said rabbets are rectangular in cross-section with the longer side thereof lying parallel to one another.
Claim 10
Dependent Claim
78 words
A lightweight generally non-flexible homogeneous liner element for lining the wall of a high temperature chamber consisting of: a multiplicity of layers of refractory fibers accreted by vacuum deposition to a thickness of at least three inches from an aqueous slurry of said fibers and held bonded together by binder material, said liner element having a density of 10-12 pounds per cubic foot and the major quantity of said fibers having a length of at least two inches.
Claim 11
Dependent Claim
78 words
A lightweight generally non-flexible homogeneous liner element for lining the wall of a high temperature chamber consisting of: a multiplicity of layers of refractory fibers accreted by vacuum deposition to a thickness of at least three inches from an aqueous slurry of said fibers and held bonded together by binder material, said liner element having a density of 10-12 pounds per cubic foot and the major quantity of said fibers having a length of at least two inches.
Claim 12
Dependent Claim
130 words
That method of making blocks adapted for internesting assembly to form a refractory lining for a high temperature to withstand temperatures ranging between 2400° and 3000° F. chamber which comprises: vacuum depositing a multiplicity of layers of ceramic fibers from an aqueous solution of said fibers and a binder material therefor to form a slab of interbonded fibers to a thickness ranging between 3 and 8 inches and having a density of about 10 to 12 pounds per cubic foot, sub-dividing said slab into a plurality of rectangular parallelopiped blocks, and rabbeting one diagonally related pair of longer corners and one diagonally related pair of end corners of said blocks whereby a plurality of said blocks are adapted to be internested to form a lining for a high temperature chamber.
Claim 13
Dependent Claim
130 words
That method of making blocks adapted for internesting assembly to form a refractory lining for a high temperature to withstand temperatures ranging between 2400° and 3000° F. chamber which comprises: vacuum depositing a multiplicity of layers of ceramic fibers from an aqueous solution of said fibers and a binder material therefor to form a slab of interbonded fibers to a thickness ranging between 3 and 8 inches and having a density of about 10 to 12 pounds per cubic foot, sub-dividing said slab into a plurality of rectangular parallelopiped blocks, and rabbeting one diagonally related pair of longer corners and one diagonally related pair of end corners of said blocks whereby a plurality of said blocks are adapted to be internested to form a lining for a high temperature chamber.
Claim 14
Dependent Claim
23 words
That method defined in claim 9 characterized in the step of utilizing cermaic fibers predominately having a length of at least three inches.
Claim 15
Dependent Claim
15 words
That method defined in claim 9 characterized in the step of using spun ceramic fibers.
Claim 16
Dependent Claim
88 words
A lightweight homogeneous substantially rigid refractory element for use as an internal lining for a high temperature chamber subject to temperatures of 1600° F. to 3000° F., said element consisting of a multiplicity of layers of inter-bonded spun ceramic fibers vacuum deposited from an aqueous suspension thereof containing a binder for said fibers at points of crossover, said element having a density of the order of 10-12 pounds per cubic foot and a thickness normal to the plane of said fiber layers of not less than 3 inches.
Claim 17
Dependent Claim
88 words
A lightweight homogeneous substantially rigid refractory element for use as an internal lining for a high temperature chamber subject to temperatures of 1600° F. to 3000° F., said element consisting of a multiplicity of layers of inter-bonded spun ceramic fibers vacuum deposited from an aqueous suspension thereof containing a binder for said fibers at points of crossover, said element having a density of the order of 10-12 pounds per cubic foot and a thickness normal to the plane of said fiber layers of not less than 3 inches.
Claim 18
Dependent Claim
42 words
A high temperature refractory element as defined in claim 12 characterized in that said element is vacuum formed in a slab sized for sub-division into a plurality of elongated elements each having a width at least as great as the thickness thereof.
Claim 19
Dependent Claim
17 words
A high temperature refractory element as defined in claim 12 characterized in that said element is tubular.
Claim 20
Dependent Claim
24 words
A high temperature refractory element as defined in claim 12 characterized in that at least one end thereof is provided with a continuous rabbet.
Claim 21
Dependent Claim
24 words
A high temperature refractory element as defined in claim 14 characterized in that at least one end thereof is provided with a continuous rabbet.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-05-13 | 1983-11-12 | 1984-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-13 | 1987-11-12 | 1988-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-13 | 1991-11-12 | 1992-05-13 | $7700.00 | Window Closed / Lapsed |