US Patent 11359384 Joining system for floor panels

The invention relates to a joining system for floor panels, comprising a female coupling recess formed in a first floor panel, said female coupling recess being adapted to receive a male coupling tongue projecting from an adjoining second floor panel in a direction perpendicular to a main floor surface plane in which the floor panels are laid. The joining system further includes an elasticity slot for facilitating resilient movement in said vertical snap joint interlocking engagement.