Landing mat structure

Claim 1

A UNIT FOR ASSEMBLY IN MULTIPLE TO FORM, A MAT, COMPRISING A GENERALLY S-FORM PANEL, WITH OPPOSITELY OPENING CHANNEL SECTIONS HAVING A COMMON INNER WALL, SAID CHANNEL SECTIONS HAVING OUTER WALLS EXTENDING NORMALLY FROM THE OUTER CORNERS THEREOF RESPECTIVELY, AND COMPLEMENTARY INTERLOCKING MEANS AT OPPOSITE SIDES OF THE PANEL COMPRISING AN INVERTED T-FORM EXTENSION ON THE OUTER WALL EDGE OF ONE OF SAID SECTIONS AND A T-FORM SLOT ACROSS THE OUTER CORNER OF THE OTHER OF SAID SECTIONS, THE CROSS PART OF THE T-FORM SLOT BEING IN THE OUTER WALL SIDE OF SAID CORNER AND THE LEG PART THEREOF IN THE CHANNEL BOTTOM SIDE OF SAID CORNER, SAID SLOT BEING ADAPTED FOR INTERLOCKING ENGAGEMENT WITH THE EXTENSION ON THE OUTER WALL OF AN ADJACENT PANEL.