US3692637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating a hollow structure having cooling channels
Assignee: Individual
•
Filing: 1969-11-24
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Granted: 1972-09-19
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Expires: 1989-11-24
Abstract
Abstract A METHOD OF FABRICATING A STRUCTURAL PART FOR USE AS A WALL OF A DEVICE SUBJECT TO HIGH TEMPERATURES, SUCH AS A ROCKET COMBUSTION CHAMBER, A HEAT SHIELD, OR A NOSE CONE OF A MISSILE WHEREIN INDIVIDUAL TUBULAR ELEMENTS HAVING EITHER AN OPENED OR A CLOSED CROSS SECTION ARE FITTED TOGETHER TO FORM A WALL AND ARE CONNECTED IN A MECHANICALLY STRONG AND PRESSURE PROOF MANNER BY A LAYER OF MATERIAL WHICH IS APPLIED GALVANOPLASTICALLY ON EITHER ONE OR BOTH SIDES THEREOF. VARIOUS STRUCTURAL CONFIGURATIONS ARE POSSIBLE AND IN SOME INSTANCES THE RESULTANT STRUCTURE IS REINFORCED BY A REINFORCING MEMBER SUCH AS A STEEL STRIP.
Inventors
- 👤 Carl-Helmut Dederra
- 👤 Karl Butter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:34
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/62; F02K9/64; B; B64; B64G; B64G1/00; B64G1/22; B64G1/52; B64G1/58; Y; Y10; Y10S; Y10S29/00; Y10S29/012; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336; Y10T29/49339; Y10T29/49341; Y10T29/49826; Y10T29/49888
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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |