US3587198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat protected metal wall
Assignee: Universal Oil Products Co
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Filing: 1969-04-14
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Granted: 1971-06-28
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Expires: 1989-04-14
Abstract
Abstract THE METHOD AND MEANS FOR PROVIDING A TWO-LAYER HEAT-PROTECTED METAL WALL FOR USE IN HIGH TEMPERATURE CHAMBERS IN WHICH METAL HOLDING MEMBERS HAVING BENDABLE END PORTIONS ARE WELDED TO THE METAL WALL, A LIGHTWEIGHT CASTABLE INSULATING MATERIAL IS APPLIED ADJACENT TO THE METAL WALL, THE HOLDING MEMBERS ARE BENT TO EXTEND BEYOND SUCH MATERIAL, AND A CASTABLE MONOLITHIC REFRACTORY MATERIAL IS APPLIED ADJACENT TO THE LIGHTWEIGHT MATERIAL, TO COMPLETELY EMBED THE HOLDING MEMBERS. THE TWO LAYERS ARE THUS ANCHORED AND SUPPORTED TO THE METAL WALL BY MEANS OF THE HOLDING MEMBERS.
Inventors
- 👤 Walter C Hensel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:02
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/14; F27D1/141; F27D1/10; G; G21; G21C; G21C11/00; G21C11/08; G21C11/081; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49888
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |