Patent US3285593A successfully refreshed from Google Patents.
US3285593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace heat shield
Assignee: General Electric Co
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Filing: 1964-09-04
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Granted: 1966-11-15
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Expires: 1984-09-04
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Tavernelli
- 👤 Richard A Piepsny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:43
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/0006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A MULTI-LAYERED HEAT SHIELD ASSEMBLY FOR A VACUUM OR NON-OXIDIZING ATMOSPHERE TYPE FURNACE COMPRISING A PLURALITY OF METAL SHEET MEMBERS ADAPTED TO SUBSTANTIALLY ENCLOSE A HOT ZONE OF SAID FURNACE, SAID MEMBERS BEING ARRANGED IN MULTI-LAYERED FASHION SO THAT OUTWARDLY DIRECTED THERMAL RADIATION FROM THE HOT ZONE IS REFLECTED BACK INTO THE HOT ZONE BY THE INNERMOST MEMBER OF SAID HEAT SHIELD AND SO THAT OUTWARDLY SUCCESSIVE MEMBERS REFLECT BACK TOWARDS THE HOT ZONE THERMAL RADIATION FROM THE NEXT INNERMOST MEMBER, SAID MEMBERS BEING REMOVABLY LOCATED ADJACENT ONE ANOTHER, SAID MEMBERS HAVING AFFIXED TO AT LEAST SOME OF THEIR SURFACES UNDULATING WIRE IN A MANNER TO HOLD SAID MEMBERS APART AND PREVENT WARPAGE OF SUCH A DEGREE AS TO ALLOW MEMBERS TO TOUCH ONE ANOTHER, AND MINIMIZE CONDUCTIVE HEAT TRANSFER THROUGH SAID HEAT SHIELD.
Claim 2
Dependent Claim
134 words
A MULTI-LAYERED HEAT SHIELD ASSEMBLY FOR A VACUUM OR NON-OXIDIZING ATMOSPHERE TYPE FURNACE COMPRISING A PLURALITY OF METAL SHEET MEMBERS ADAPTED TO SUBSTANTIALLY ENCLOSE A HOT ZONE OF SAID FURNACE, SAID MEMBERS BEING ARRANGED IN MULTI-LAYERED FASHION SO THAT OUTWARDLY DIRECTED THERMAL RADIATION FROM THE HOT ZONE IS REFLECTED BACK INTO THE HOT ZONE BY THE INNERMOST MEMBER OF SAID HEAT SHIELD AND SO THAT OUTWARDLY SUCCESSIVE MEMBERS REFLECT BACK TOWARDS THE HOT ZONE THERMAL RADIATION FROM THE NEXT INNERMOST MEMBER, SAID MEMBERS BEING REMOVABLY LOCATED ADJACENT ONE ANOTHER, SAID MEMBERS HAVING AFFIXED TO AT LEAST SOME OF THEIR SURFACES UNDULATING WIRE IN A MANNER TO HOLD SAID MEMBERS APART AND PREVENT WARPAGE OF SUCH A DEGREE AS TO ALLOW MEMBERS TO TOUCH ONE ANOTHER, AND MINIMIZE CONDUCTIVE HEAT TRANSFER THROUGH SAID HEAT SHIELD.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |