Beam or other element of great length of a composite material po

Details Beam or other element of great length of a composite material po Beam or other element of great length of a composite material po

1984-09-17

1986-10-14

Van Balen, William J.

Stock material or miscellaneous articles

Sheet including cover or casing

Foamed or expanded material encased

5230911, 52727, 428 76, 428117, 428119, 428178, 4283099, 4283166, B32B 312, B32B 508, B32B 514, B32B 518

Patent

active

046172173

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.

REFERENCES:
patent: 3920871 (1975-11-01), Johnson
patent: 4464429 (1984-08-01), Michaud-Soret

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