CPC E04F 15/02038 (2013.01) [E04C 2/40 (2013.01); E04F 15/102 (2013.01); E04F 2201/0146 (2013.01); E04F 2201/023 (2013.01); E04F 2201/044 (2013.01); E04F 2201/0535 (2013.01); E04F 2201/0547 (2013.01); E04F 2201/0552 (2013.01)] | 19 Claims |
1. A set of essentially identical panels provided with a mechanical locking system comprising a displaceable tongue, which is arranged in a displacement groove at a first edge of a first panel, and a first tongue groove at a second edge of an adjacent second panel, the displaceable tongue is configured to cooperate with the first tongue groove for locking of the first and the second edge in a vertical direction, wherein the displacement groove comprises a first opening and the first tongue groove comprises a second opening, wherein the displaceable tongue comprises a first and a third surface and the first tongue groove comprises a second and fourth surface, wherein a first angle between the second surface and a front face of the second panel is greater than a second angle between the fourth surface and the front face,
wherein the first surface of the displaceable tongue is configured to cooperate with the second surface of the tongue groove under a first load on the mechanical locking system and the third surface of the displaceable tongue is configured to cooperate with the fourth surface of the tongue groove under a second load on the mechanical locking system, wherein the first load corresponds to a load under normal condition and the second load correspond to an increased load.
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