US4045168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for mounting panels of fibrous refractory material
Assignee: Creusot Loire SA
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Filing: 1976-01-30
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Granted: 1977-08-30
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Expires: 1996-01-30
Abstract
Abstract A device for mounting panels of fibrous refractory material against the inner surface of the wall of an industrial furnace, comprising a plug of refractory material in the form of a bolt with a square head and a non-threaded cylindrical shank provided with a plurality of circular ribs arranged in planes perpendicular to the axis of the plug, the panels to be attached thereby having spaced-apart apertures of dimensions intermediate those of the head and of the ribs on the shank, and the wall of the furnace having corresponding cavities filled with a sealing material and for receiving the shank of the plug.
Inventors
- 👤 Lucien Abrial
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:00
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/14; F27D1/144; F27D1/0003; F27D1/0006; F27D1/0009
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
202 words
A device for mounting panels of fibrous refractory material of a predetermined thickness against a wall of an industrial furnace, the device comprising: a plug of refractory material having the form of a bolt with a square head and a non-threaded cylindrical shank provided with a plurality of circular ribs, said plug having an axis arranged in planes perpendicular to the axis of said plug, the panels to be attached thereby having spaced-apart apertures of dimensions intermediate those of said head and of said ribs on the shank, and the wall of the furnace having corresponding cavities filled with a sealing material and for receiving said shank of the plug; and two washers of combustible material, which are to be burned in the furnace and thereby eliminated at the first heating, one of said washers being adapted to be arranged between said head of the plug and the refractory panel to be mounted by said plug, the other of said washers having a height substantially equal to the thickness of the panel, and being adapted to line the apertures in the panel into which said plug is introduced and consequently surround a portion of said shank of the plug adjacent said head.
Claim 2
Independent Claim
202 words
A device for mounting panels of fibrous refractory material of a predetermined thickness against a wall of an industrial furnace, the device comprising: a plug of refractory material having the form of a bolt with a square head and a non-threaded cylindrical shank provided with a plurality of circular ribs, said plug having an axis arranged in planes perpendicular to the axis of said plug, the panels to be attached thereby having spaced-apart apertures of dimensions intermediate those of said head and of said ribs on the shank, and the wall of the furnace having corresponding cavities filled with a sealing material and for receiving said shank of the plug; and two washers of combustible material, which are to be burned in the furnace and thereby eliminated at the first heating, one of said washers being adapted to be arranged between said head of the plug and the refractory panel to be mounted by said plug, the other of said washers having a height substantially equal to the thickness of the panel, and being adapted to line the apertures in the panel into which said plug is introduced and consequently surround a portion of said shank of the plug adjacent said head.
Claim 3
Dependent Claim
18 words
The device as defined in claim 1, wherein the material of said refractory plug is a silico-aluminous material.
Claim 4
Dependent Claim
21 words
The device as defined in claim 1, wherein the wall thickness of said other washer is between 3 and 8 millimeters.
Claim 5
Dependent Claim
20 words
The device as defined in claim 1, wherein the height of said one washer is between 1.5 and 3 mm.
Claim 6
Dependent Claim
23 words
The device as defined in claim 4, wherein the wall thickness of said other washer is of the order of approximately 5 mm.
References Cited (Backward Citations)
FR768114A
Cited
US2021610A
Cited
US2164322A
Cited
US2207897A
Cited
US3383820A
Cited
US3786605A
Cited
US3909907A
Cited
ATA229782A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |