Patent ID: 7587862

Claim:
A movable support armature for a curved reflector of electromagnetic radiation, the armature being defined substantially as a double layer grid space frame having upper and bottom major surfaces, the armature comprising plural parallel major chord framing members each having an elongate axis and disposed essentially in the frame major surfaces and extending parallel to an elongate extent of the frame, the major chord members including at least a pair of bottom major chord members essentially in the frame bottom major surface and only three upper major chord members, the upper major chord members including a central chord member located between two outer chord members, the upper chord members defining two planes which intersect at the central upper chord member at an included angle which is concave away from the frame bottom major surface, the armature also comprising node connector structures disposed at and connected to spaced locations along each major chord member, minor chord framing members connected between corresponding nodes on major chord members defining the respective frame surfaces aforesaid to define arrays of major and minor chord members in each frame surface, and strut framing members interconnected between nodes in different ones of the frame surfaces.