Patent ID: 7143550
Filing Date: 2006-12-05
Classification: E04B,Y10T

Abstract:
1. A double layer reticulated frame structure, comprising: an internal network portion comprised of interconnected chord struts, the interconnected chord struts defining a two-way grid in the internal network portion; an external network portion comprised of interconnected chord struts and intermediate lattice struts, the chord struts defining a two-way grid in the external network portion corresponding to the two-way grid of the internal network portion, and the intermediate lattice struts defining a plurality of openings in the two-way grid of the external network portion; and diagonal struts connected to the chord struts of the external and the internal network portions in an alternating manner along two directions such that diagonal struts along one internal chord strut direction are connected to the external and internal network portions at different nodes than diagonal struts along the other internal chord strut direction so that only two diagonal struts are connected to each other at any node in both the internal and internal network portions.