US3930916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat resistant panels
Assignee: Zirconal Processes Ltd
•
Filing: 1974-06-18
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Granted: 1976-01-06
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Expires: 1994-06-18
Abstract
Abstract Linings for furnaces or ovens are made by cutting a sheet of refractory fibrous material having fibers extending longitudinally parallel therein into strips that extend laterally, then turning the strips through 90° so the fibers are end-on, compressing the fiber end-on strips together to form a hot-face surface and attaching the strips at their base to a support.
Inventors
- 👤 Stanley John Shelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:36
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/04; F27D1/06; C; C04; C04B; C04B30/00; C04B30/02; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10S428/92; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1059; Y10T156/1062; Y10T156/1075; Y10T156/1077
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
116 words
A method of manufacturing lining element modules for the hot-face surface of a furnace or oven which comprises: dividing into laterally extending strips a sheet of refractory fibrous material having fibers extending longitudinally parallel to the flat plane of the sheet, attaching the resulting strips to a support with the fibers in each strip positioned end-on to said support with an unhardened refractory cement, said support comprising: a layer of heat insulating block material, a backing metal sheet, and a further heat-insulating layer clamped between said metal sheet and said block material, and then heating the resulting assembly to harden said cement and fix the strips to said support with the fibers end-on to the support.
Claim 2
Independent Claim
116 words
A method of manufacturing lining element modules for the hot-face surface of a furnace or oven which comprises: dividing into laterally extending strips a sheet of refractory fibrous material having fibers extending longitudinally parallel to the flat plane of the sheet, attaching the resulting strips to a support with the fibers in each strip positioned end-on to said support with an unhardened refractory cement, said support comprising: a layer of heat insulating block material, a backing metal sheet, and a further heat-insulating layer clamped between said metal sheet and said block material, and then heating the resulting assembly to harden said cement and fix the strips to said support with the fibers end-on to the support.
Claim 3
Dependent Claim
37 words
The method of claim 1 wherein said strips are supported in end-on position on a wire grid, the grid with the supported strips is placed onto said support and then the wires forming the grid are removed.
Claim 4
Dependent Claim
19 words
The method of claim 2 wherein said grid includes jigs for correctly positioning said strips relatively to said support.
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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) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |