US3795559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft fluted core radome and method for making the same
Assignee: Boeing Co
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Filing: 1971-10-01
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Granted: 1974-03-05
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Expires: 1991-10-01
Abstract
Abstract A COMPLEX CONTOURED FLUTED CORE RADOME STRUCTURE FOR AIRCRAFT UTILIZING A RELATIVELY HIGH TEMPERATURE AND HIGH PRESSURE CURE CYCLE FOR LAMINATED FIBER MATERIAL. THE METHOD FURTHER INCLUDES THE UTILIZATION OF REMOVABLE AND REUSABLE FLEXIBLE SILICONE RUBBER MANDRELS ADAPTABLE TO COMPLEX CONTOUR CONFIGURATIONS. THE USE OF THE FLEXIBLE SILICONE RUBBER MANDRELS PERMITS THE USE OF HIGH CURING PRESSURES TO COMPLETELY AND UNIFORMLY FILL THE FLUTES OF THE FLUTED CORE PANEL STRUCTURE AND PRODUCE A STRUCTURAL PRODUCT WITH VERY LOW VOID CONTENT WHICH IS NECESSARY FOR MEETING THE RADAR ELECTRICAL REQUIREMENTS COMBINED WITH IMPROVED MECHANICAL PROPERTIES FOR THE STRUCTURAL REQUIREMENTS.
Inventors
- 👤 V Horn
- 👤 H Kangas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:03
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/44; B29C33/48; B29C33/50; B29C33/505; B32; B32B; B32B3/00; B32B3/10; B32B3/18; B29C37/00; B29C37/0003; B29C37/0017; B29C70/00; B29C70/04; B29C70/28; B29C70/30; B29C70/34; B29C70/342; B29D; B29D24/00; B29D24/002; B29D24/008; B29D25/00; B32B1/00; B64; B64C; B64C1/00; B64C1/36; B29C33/448; B29C43/00; B29C43/02; B29C43/10; B29C43/12; Y; Y02; Y02T; Y02T50/00; Y02T50/40; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1066; Y10T428/00; Y10T428/23; Y10T428/233
Claims Analysis
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References Cited (Backward Citations)
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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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |