Composite structural beams and method
US3995081A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1974 |
| Grant date | Nov 30, 1976 |
| Priority date | — |
| Expiry date | Oct 7, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24711
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Strong, lightweight structural shapes or structures adapted for anistropic load bearing useful as structural beams or stiffeners for other structures, e.g., aircraft and which prevent or have improved resistance to forces tending to peel apart the structures, i.e., incipient peel. The shapes are fabricated from plicated laminates of strips or sheets of resinous, filament reinforced, composite materials having high strength and low weight. Fabrication of the shapes is carried out in such manner that upon curing of the resin the resultant stiffener shapes are capable of distributing loading forces so as to reduce localization of stresses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.