US 12,421,736 B2
Leak-proof and unbreakable panel comprising a locking element, and method for producing such a panel
Hans-Jürgen Hannig, Bergisch Gladbach (DE); Andreas Sieder, Ludwigsfelde (DE); Eberhard Herrmann, Wismar (DE); and Carsten Buhlmann, Baruth (DE)
Assigned to SURFACE TECHNOLOGIES GMBH & CO. KG, Baruth (DE)
Appl. No. 18/036,116
Filed by SURFACE TECHNOLOGIES GMBH & CO. KG, Baruth (DE)
PCT Filed Nov. 24, 2021, PCT No. PCT/EP2021/082854
§ 371(c)(1), (2) Date May 9, 2023,
PCT Pub. No. WO2022/156940, PCT Pub. Date Jul. 28, 2022.
Claims priority of application No. 21153050 (EP), filed on Jan. 22, 2021.
Prior Publication US 2024/0018789 A1, Jan. 18, 2024
Int. Cl. E04F 15/00 (2006.01); E04F 13/08 (2006.01); E04F 15/02 (2006.01)
CPC E04F 15/02038 (2013.01) [E04F 13/0894 (2013.01); E04F 2201/0146 (2013.01); E04F 2201/023 (2013.01); E04F 2201/043 (2013.01); E04F 2201/0535 (2013.01); E04F 2201/0552 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A panel for covering a surface of a room, comprising
a panel element extending in a longitudinal direction and in a transverse direction for transferring use loads introduced at an upper side of the panel element to a lower side of the panel element facing the surface of the room, wherein the upper surface is spaced apart from the lower side in a thickness direction;
a retaining groove extending in an end face short side of the panel element in the transverse direction; and
a locking element inserted into the retaining groove, in particular immovably, wherein,
for an extension b0 of the retaining groove in the transverse direction with respect to a nominal width B of the panel element between a first edge of the panel element extending in the longitudinal direction and a second edge of the panel element extending in the longitudinal direction 0.50≤b0/B≤0.97, wherein a first reinforcing area with an extension t1 in the transverse direction is formed between a first end of the retaining groove facing the first edge in the transverse direction, wherein a second reinforcing area with an extension t2 in the transverse direction is formed in the transverse direction between a second end of the retaining groove facing the second edge in the transverse direction, wherein for the first reinforcing area 0.005≤t1/B≤0.090 and/or for the second reinforcing region 0.005≤t2/B≤0.090.