Patent ID: 9382716
Filing Date: 2016-07-05
CPC Classification: E04B,E04F,Y10T

Claim Text:
1. A building panel having an edge portion provided with a displacement groove, in which a flexible tongue formed as a separate part is received, wherein the flexible tongue comprises a first long edge engaged in the displacement groove and a displaceable second long edge, the displaceable second long edge is configured to cooperate with a tongue groove in the another building panel for locking the building panels together in a vertical direction, the second long edge being displaceable in the horizontal direction in the displacement groove and extending substantially the length of the building panel, wherein the second long edge is configured to extend outside the displacement groove in a connected state of the building panels wherein a first portion of the flexible tongue at the first long edge has a first vertical height, and a second portion of the flexible tongue at the second long edge has a second vertical height, and the first vertical height is greater than the second vertical height so that a clearance extending horizontally toward the first portion is provided between the flexible tongue and a surface of the displacement groove at the second portion of the flexible tongue, the clearance being exposed to the surface of the displacement groove.