Patent US3553054A successfully refreshed from Google Patents.
US3553054A
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US
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Laminated structural members
Assignee: Boeing North American Inc
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Filing: 1970-01-12
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Granted: 1971-01-05
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Expires: 1990-01-12
Abstract
Abstract APPARATUS AND METHODS ARE DISCLOSED FOR VACUUM-BAG MANUFACTURE OF THERMOSETTING RESIN-IMPREGNATED FABRIC LAYERS INTO FORMS SUITABLE FOR STRUCTURAL MEMBER APPLICATIONS. THE RESULTING LAMINATED ASSEMBLY DEVELOPS EDGEWISE COMPRESSIVE STRENGTH, INTER-LAMINAR SHEAR STRENGTH, STRUCTURAL MODULUS, AND DENSITY PROPERTIES THAT ARE SIGNIFICATNLY IMPROVED OVER THE LIKE PROPERTIES DEVELOPED IN COMPARABLE LAMINATES MADE BY KNOWN VACUUM-BAG APPARATUS AND MANUFACTURING METHODS.
Inventors
- 👤 Louis Maus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:00
CPC Classifications
B; B32; B32B; B32B37/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |