Framework made from thin-walled round composite fibre rods
AssigneeDeutsche Forschungsanstalt fur Luft-u Raumfahat e.V.
InventorRainer Schutze
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AssigneeDeutsche Forschungsanstalt fur Luft-u Raumfahat e.V.
InventorRainer Schutze
Estimating the term…
A framework is formed from a plurality of thin-walled, round composite fiber rods having a pressure-resistant foam core and walls. The walls include at least one layer of axially parallel fibers. The framework is constructed from strut rods, transverse rods and joint plates which are operative for connecting the strut rods to the transverse rods. The joint plates are formed from a composite fiber material. Axially parallel recesses are provided in the walls of the strut rods, and the recesses have a width corresponding to the thickness of the joint plates. The recesses extend diagonally through the foam core of the strut rods, and the joint plates are inserted into the recesses where they are glued in place. The transverse rods are provided with slots in the ends thereof. The joint plates are inserted into the slots and glued to join the strut rods to the transverse rods.
A framework of thin-walled, round composite fibre rods comprising a pressure-resistant foam core and walls, said walls comprising at least one layer of axially parallel unidirectional elongate fibres, said framework comprising strut rods, transverse or diagonal rods, and connection elements for connecting said strut rods to said transverse or diagonal rods, said connection elements comprising joint plates of composite fibre material and having a plurality of edges, wherein axially-parallel recesses are provided in said walls of said strut rods, said recesses having a width corresponding to the thickness of said joint plates, and said recesses extending diagonally through said foam core of said strut rods up to the opposite side of said walls of said strut rods, wherein said joint plates are inserted into said recesses and glued at the inward one of said edges to the inside of said walls of said strut rods opposite said recesses, and also glued to said foam core at their widths engaging said strut rods, and wherein said transverse or diagonal rods have ends, said ends being provided with slots, said slots having a width corresponding to said thickness of said joint plates, whereby said slots overlap said joint plates at both sides thereof.
Dependencies are inferred from the claim text.