US3892907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced refractory heat-insulator
Assignee: Toyota Motor Corp
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Filing: 1972-11-13
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Granted: 1975-07-01
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Expires: 1992-11-13
Abstract
Abstract A reinforced refractory heat-insulator having a refractory lining which contains dispersed metallic fibers and an exterior casting enveloping the refractory lining, and methods for fabricating such heat-insulators.
Inventors
- 👤 Itaru Niimi
- 👤 Yasuhisa Kaneko
- 👤 Fumiyoshi Noda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:54
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/08; F01N13/10; F01N13/102; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/26; F01N3/30; F01N3/34; F02; F02B; F02B77/00; F02B77/11; F16; F16L; F16L59/00; F16L59/02; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12104; Y10T428/12111; Y10T428/12431; Y10T428/12493; Y10T428/12736; Y10T428/12771; Y10T428/12778; Y10T428/12861; Y10T428/12951; Y10T428/249921; Y10T428/249924; Y10T428/249928; Y10T428/249931; Y10T428/29; Y10T428/2913; Y10T428/298
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
27 words
A REINFORCED REFRACTORY HEAT-INSULTOR COPRISING A CAST CERAMIC INNER REFRACTORY LINING CONTAINING DISPERSED METALLIC FIBERS, AND AN EXTERIOR IRON OR ALUMINUM CASTING WHICH ENVELOPS SAID REFRACTORY LINING.
Claim 2
Dependent Claim
27 words
A REINFORCED REFRACTORY HEAT-INSULTOR COPRISING A CAST CERAMIC INNER REFRACTORY LINING CONTAINING DISPERSED METALLIC FIBERS, AND AN EXTERIOR IRON OR ALUMINUM CASTING WHICH ENVELOPS SAID REFRACTORY LINING.
Claim 3
Dependent Claim
27 words
The reinforced refractory heat-insulator of claim 1, wherein said refractory material comprises a cast material selected from the group consisting of castable alumina and castable fused silica.
Claim 4
Dependent Claim
26 words
The reinforced refractory heat-insulator of claim 1, wherein said metallic fiber material comprises a metal selected from the group consisting of: stainless steels and ferrite-chromium-aluminum alloys.
Claim 5
Dependent Claim
25 words
The reinforced refractory heat-insulator of claim 1, wherein the diameter of said metallic fibers is in the range of about 0.08 to about 1.0 mm.
Claim 6
Dependent Claim
23 words
The reinforced refractory heat-insulator of claim 1, wherein the length of said fibers is in the range of about 5 to 30 mm.
Claim 7
Dependent Claim
19 words
The reinforced refractory heat-insulator of claim 1, wherein said inner refractory lining is bonded to said exterior metallic casting.
References Cited (Backward Citations)
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US3118807A
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US3583919A
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US3632792A
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US3676293A
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US3709772A
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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) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |