CPC E04F 15/02038 (2013.01) [E04B 5/00 (2013.01); E04F 15/02 (2013.01); E04F 15/04 (2013.01); E04F 15/08 (2013.01); E04F 15/10 (2013.01); E04F 15/107 (2013.01); E04F 15/18 (2013.01); E04F 2201/0115 (2013.01); E04F 2201/0138 (2013.01); E04F 2201/0153 (2013.01); E04F 2201/0523 (2013.01); E04F 2201/0547 (2013.01); Y10T 428/167 (2015.01)] | 9 Claims |
1. A building panel having an edge portion provided with a groove, in which a tongue formed as a separate part is received,
wherein the tongue comprises a tongue body and a protrusion at an edge of the tongue body,
wherein the protrusion and the tongue body are spaced by a space between the protrusion and the tongue body,
wherein the protrusion is bendable into the space, and in the groove, and
wherein an outer part of the protrusion comprises a round shaped protruding part configured to facilitate installations with vertical folding,
wherein the round shaped protruding part is round shaped in a width direction of the tongue, such that a width of the round shaped protruding part varies along a longitudinal direction of the tongue.
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