Patent ID: 7604429

Claim:
A system comprising a first substantially horizontal mounting rail which extends in a first horizontal direction and a second substantially horizontal mounting rail which extends in a second horizontal direction transversely to said first horizontal direction; and a connecting node connecting said first mounting rail with said second mounting rail, said connecting node including a first vertically downwardly open U-shaped member at least partially surrounding said first mounting rail from above of said first mounting rail and having two side walls spaced from one another in said second horizontal direction and a connecting element which connects said side walls, and a second vertically upwardly open U-shaped member connected to said first U-shaped member, supporting said second mounting rail from below of said second mounting rail and having two side walls spaced from one another in said first horizontal direction and a connecting element which connects said side walls of said second U-shaped member with one another, a vertically downwardly open pocket attached to one of said side walls of said first vertically downwardly open U-shaped member, and an angled element having a first limb inserted upwardly in a vertical direction into said downwardly open pocket and a second limb extending substantially horizontally in said second horizontal direction and fixed to said second mounting rail between said side walls of said second vertically upwardly open U-shaped member.