US3209818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal barrier
Assignee: Westinghouse Electric Corp
•
Filing: 1961-05-15
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Granted: 1965-10-05
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Expires: 1981-05-15
Abstract
No abstract record available.
Inventors
- 👤 Iii Oliver P Steele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:45
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/58; F04D29/586; F04D29/5893
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
128 words
IN A SEALED HOLLOW HOUSING MEMBER HAVING TWO SPACED HOLLOW REGIONS WITH THE INTERIORS THEREOF CONNECTED TOGETHER BY A HOLLOW NECKED-DOWN PORTION AND HAVING ONE OF SAID REGIONS SUBJECTED TO RELATIVELY HIGH TEMPERATURE, SAID NECKED-DOWN PORTION HAVING AT LEAST A PORTION OF ITS EXTERIOR SURFACE EXPOSED TO THE AMBIENT ATMOSPHERE, STATIC THERMAL BARRIER MEANS HAVING AT LEAST A PORTION THEREOF EXPOSED TO THE AMBIENT ATMOSPHERE AND DISPOSED BETWEEN SAID ONE REGION AND THE OTHER OF SAID REGIONS FOR PREVENTING THE TRANSFER OF HEAT THEREBETWEEN, SAID THERMAL BARRIER MEANS INCLUDING FLOW DIVIDING MEANS DISPOSED ADJACENT SAID NECKED-DOWN HOUSING PORTION AND EXTENDING GENERALLY LATERALLY THEREFROM, SAID FLOW DIVIDING MEANS BEING SHAPED TO OBSTRUCT THE FLOW OF CONVECTION CURRENTS ADJACENT SAID NECKED-DOWN PORTION FROM SAID ONE REGION TO SAID OTHER REGION.
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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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |