US3600249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced plastic honeycomb method and apparatus
Assignee: Hexcel Corp
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Filing: 1966-07-28
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Granted: 1971-08-17
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Expires: 1986-07-28
Abstract
Abstract A METHOD AND APPARATUS FOR CONSTRUCTING HONEYCOMB FROM A FABRIC WHICH TENDS TO DISTORT UNDER ITS OWN WEIGHT. THE FABRIC IS IMPREGNATED WITH A SLIGHT AMOUNT OF A RESIN IMPREGNATION MATERIAL TO GIVE IT SUFFICIENT BODY, PREVENTING ITS DISTORTION WHILE ALLOWING IT TO BE FLEXIBLY DEFORMED DURING EXPANSION OF THE HONEYCOMB. AFTER THE IMPREGNATION OF THE FABRIC, ADHESIVE LINES ARE APPLIED THERETO. STRIPS OF THE FABRIC ARE THEN STACKED AND SUBJECTED TO HEAT TO CURE THE ADHESIVE AND THE STACKS ARE EXPANDED TO GIVE THEM THE HONEYCOMB CONFIGURATION. THEREAFTER THE IMPREGNATION MATERIAL AND ADHESIVES ARE FURTHER CURED AND COATED TO RIGIDIFY THE STRUCTURE.
Inventors
- 👤 Wendell T Jackson
- 👤 John A Stark
- 👤 Beverley R Garrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:09
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/40; B29C66/41; B29C66/43; B29C66/438; B29C35/00; B29C35/02; B29C65/00; B29C65/48; B29C65/4805; B29C65/483; B29C65/4835; B29C65/52; B29C65/523; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/70; B29C66/72; B29C66/721; B29C66/7212; B29C66/7214; B29C66/72141; B29C66/73; B29C66/737; B29C66/7375; B29C66/73753; B29C66/73754; B29C66/739; B29C66/7394; B29C66/73941; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B32; B32B; B32B3/00; B32B3/10; B32B3/12; B29C35/04; B29C35/045; B29C2035/046; B29C2791/00; B29C2791/001; B29C65/02; B29C65/10; B29C66/71; B29C66/82; B29C66/824; B29C66/8242; B29K; B29K2079/00; B29K2079/08; B29K2105/00; B29K2105/24; B29K2105/243; B29K2309/00; B29K2309/08; B29L; B29L2031/00; B29L2031/60; B29L2031/608; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24802; Y10T428/24843; Y10T428/31504; Y10T428/31551; Y10T428/31623
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) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |