Abstract: The present invention pertains to the technical field of network structures and more particularly it relates to a knot joint of the kind adapted to engage a number of rods converging in the joint itself.According to the invention the joint (1) comprises a central core (2) and first and second couplings in alignment with said rods (3) and connected to said core (2) and said rods (3) respectively, as well as suitable to be engaged with each other by a restrained fixing, said first and second couplings consisting of clamps (8) and inserts (9), the shape of which mates with that of said clamps (8), insertable into the latter by causing them to slide in a sense transverse to the extension direction of said rods (3).

Abstract: A reticular structure for shelters having square or rectangular plan, realized by arranging a plurality of triangular modular frames, each of them comprising a polygonal mesh grid, defined by rigid struts of equal length. Each triangular modular frame is able to be inscribed in a portion of a right cylindrical surface, while the single meshes have the oblique struts inscribed in crossed geodetic lines following a cylindric helix with constant pitch.

Abstract: A junction device for tridimensionally extending trussed structures, comprising a central joining core, showing a plurality of radially extending seats, wherein the bars by which the field of trussed structure are defined, can be inserted and fastened.