US3673058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Honeycomb having laminates of unidirectional strands
Assignee: Hexcel Corp
•
Filing: 1969-04-07
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Granted: 1972-06-27
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Expires: 1989-04-07
Abstract
Abstract A honeycomb core constructed of a plurality of generally sinusoidally shaped ribbons which are bonded together to define honeycomb cells. Each ribbon includes at least one layer of adjacent, unidirectionally oriented strands which are bonded together.
Inventors
- 👤 Wendell T Jackson
- 👤 Beverley R Garrett
- 👤 Earl C Vicars
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:22
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/10; B32B3/12; B32B5/00; B32B5/22; B32B5/24; B32B5/26; E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/36; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24149; Y10T428/24165; Y10T428/249921; Y10T428/249924
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
32 words
A honeycomb core according to claim 1 including a plurality of layers of yarns and means bonding the layers face-to-face to each other to define ribbons constructed of a plurality of layers.
Claim 2
Dependent Claim
22 words
A honeycomb core according to claim 2 wherein the yarns in the different layers are angularly inclined with respect to each other.
Claim 3
Dependent Claim
71 words
A reinforced honeycomb core having a high strength-to-weight ratio comprising a plurality of generally sinusoidally shaped ribbons bonded together at adjacent nodes and defining honeycomb cells, each ribbon comprising a first layer constructed of a plurality of parallel yarns arranged side-by-side, extending in like directions and defining a flat layer free of cross yarns, a second layer constructed of a sheet material, and means bonding the layers face-to-face to each other.
Claim 4
Dependent Claim
15 words
A honeycomb core according to claim 4 wherein the sheet material comprises a metallic material.
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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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |