Patent ID: 7770338

Claim:
An apparatus for forming a geodesic structure, the apparatus including at least one triangular element comprising: three elongated leg members each having opposing ends arranged end-to-end to form three apexes defining a monobloc triangular structure; each elongated leg member forming a side portion of the triangular structure, said triangular structure having an inner surface, an outer surface and opposing side surfaces positioned between the inner and outer surfaces; at least one of the apexes being formed with an arcuate indentation that extends traverse to the outer surface and perpendicular to the opposing side surfaces; each leg member of the triangular element further comprising: at least one outer groove extending longitudinally along the outer surface, each outer groove being sized and configured to receive an outer seal member; an inwardly projecting raised shoulder having opposing side walls and extending longitudinally along the inner surface; at least one inner groove extending longitudinally in at least one of the opposing side walls of said raised shoulder, each inner groove being sized and configured to receive an inner seal member; and at least one channel extending from the outer surface and through the raised shoulder of the inner surface.