Stock material or miscellaneous articles – Structurally defined web or sheet – Including grain – strips – or filamentary elements in...
Patent
1979-03-20
1981-05-19
Thibodeau, Paul J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including grain, strips, or filamentary elements in...
52648, 428107, 428112, 428113, 428114, 428397, B32B 512, E04H 1200
Patent
active
042685605
ABSTRACT:
The present invention relates to a three-dimensional structure having a preferential direction, said structure comprising a main bundle constituted by equidistant rectilinear elements parallel to the preferential direction and four connecting bundles oriented in four different directions. A first and a second connecting bundle are formed of elements disposed in rows in planes parallel to the planes defined by the rows of the main bundle, the rows of the first and of the second bundle being disposed alternately in gaps between rows of elements of the main bundle. A third and a fourth connecting bundle are formed of elements disposed in rows in planes parallel to the planes defined by the alignments of opposite elements of adjacent rows of the main bundle, the rows of the third and fourth bundles being disposed alternately in gaps between alignments of elements of the main bundle. The structure is suitable as reinforcement for a composite material.
REFERENCES:
patent: 3949126 (1976-04-01), Crawford
Societe Europeenne de Propulsion
Thibodeau Paul J.
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