Beam or other element of great length of a composite material polymerized under heat and pressure
US4617217A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 17, 1984 |
| Grant date | Oct 14, 1986 |
| Priority date | — |
| Expiry date | Sep 17, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249981
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The beam of composite material is of the type comprising two longitudinally extending outer parallel chords interconnected by webs which are parallel to one another and perpendicular to the chords, spaces between the webs being filled with a resin foam material forming a core (8, 9). The beam further comprises prefabricated box structures (2, 14) providing a connection between the chords (6) and the core (8, 9) on each side of the webs (7), and thin metal bands disposed between two thin sheets of resin-impregnated fibers constituting heating elements (10) incorporated in the core (8, 9) in intermediate parts of the latter and disposed parallel to the webs (7) and located between the latter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.