Patent ID: 8384613
Filing Date: 2013-02-26
Classification: B64G,F24S,H01Q,H02S,Y02E

Abstract:
1. A deployable and collapsible structure comprising: a strut being straight, rigid and having a fixed length; a quadrilateral loop comprised of four of the struts being connected end-to-end at nodes, with the respective lengths being L each of the nodes providing the connected struts with multiple degrees of rotational freedom; a plurality of the quadrilateral loops, including adjacent quadrilateral loops having in common one of the struts; the struts being approximately parallel when the quadrilateral loops are collapsed, whereby the structure is collapsed; the nodes having, loci forming a plurality, i, of concentric, circles when the structure is deployed; each of the circles having a radius, r, whereby the deployed structure forms a radial grillage; the radial grillage having a geometric center; a plurality, n, of the struts lying radially with respect to the center; a cross section of the radial grillage being planar when wherein: r i the radius of circle i; and r a diagonal being a straight line that intersects two of the nodes and also forms an respectively, with each of the four struts comprising one of the quadrilateral loops when the structure is deployed; a pair of opposing nodes being comprised of the two nodes that intersect each one of the diagonals; and the loop being collapsed by translating each of the two pairs of opposing nodes in opposite directions.