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US3557553A
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US
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Structural part of a gas turbine drive unit which is exposed to thermal load and is to be cooled by means of a gas
Assignee: Daimler Benz AG
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Filing: 1968-08-30
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Granted: 1971-01-26
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Expires: 1988-08-30
Abstract
Abstract A GAS TURBINE DRIVE UNIT IN WHICH A PART THEREOF, THAT IS EXPOSED TO HIGH THERMAL LOADS AND IS TO BE COOLED BY GAS, CONSISTS OF A HIGH-HEAT-RESISTANT STEEL MATERIAL, REDUCED TO FIBERS, COMPRESSED TO SHEET METAL THICKNESS UNDER THE ACTION OF HEAT AND POSSESSING POROUS PROPERTIES.
Inventors
- 👤 Christian Schmitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:44
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/002; F05; F05B; F05B2260/00; F05B2260/20; F05B2260/203; F23R2900/00; F23R2900/03041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |