Frame for making furniture or buildings is made up of units in shape of pyramids with a diamond-shaped base whose summits may point up or down

摘要

The frame for making furniture or buildings is made up of units in the shape of pyramids with a diamond-shaped base (5) whose summits may point up or down. The pyramids may be made of solid materials, e.g. panels of wood joined by hinges, or based on a framework of rods (9) Joined by ball-and-socket joints (2, 10).