US 12,077,968 B2
Mechanical locking system for floor panels
Darko Pervan, Viken (SE)
Assigned to CERALOC INNOVATION AB, Viken (SE)
Filed by Ceraloc Innovation AB, Viken (SE)
Filed on Jul. 13, 2022, as Appl. No. 17/812,281.
Application 17/812,281 is a continuation of application No. 16/815,985, filed on Mar. 11, 2020, granted, now 11,434,646.
Application 16/815,985 is a continuation of application No. 16/102,914, filed on Aug. 14, 2018, granted, now 10,633,870, issued on Apr. 28, 2020.
Application 16/102,914 is a continuation of application No. 14/902,706, granted, now 10,060,139, issued on Aug. 28, 2018, previously published as PCT/SE2014/050877, filed on Jul. 8, 2014.
Claims priority of application No. 1350856-9 (SE), filed on Jul. 9, 2013; and application No. 1400291-9 (SE), filed on Jun. 10, 2014.
Prior Publication US 2023/0003035 A1, Jan. 5, 2023
Int. Cl. E04F 15/02 (2006.01); B32B 3/06 (2006.01); B32B 3/30 (2006.01); B32B 5/14 (2006.01); B32B 9/00 (2006.01); B32B 21/02 (2006.01); B32B 21/06 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 29/00 (2006.01); E04C 2/28 (2006.01); E04C 2/38 (2006.01); E04F 13/08 (2006.01); E04F 13/14 (2006.01); E04F 13/24 (2006.01); E04F 13/26 (2006.01); E04F 15/08 (2006.01)
CPC E04F 15/02038 (2013.01) [B32B 3/06 (2013.01); B32B 3/30 (2013.01); B32B 5/14 (2013.01); B32B 9/002 (2013.01); B32B 9/005 (2013.01); B32B 21/02 (2013.01); B32B 21/06 (2013.01); B32B 27/304 (2013.01); B32B 27/32 (2013.01); B32B 29/002 (2013.01); E04C 2/28 (2013.01); E04C 2/38 (2013.01); E04F 13/0801 (2013.01); E04F 13/14 (2013.01); E04F 13/24 (2013.01); E04F 13/26 (2013.01); E04F 15/02016 (2013.01); E04F 15/087 (2013.01); B32B 2260/026 (2013.01); B32B 2260/028 (2013.01); B32B 2260/046 (2013.01); B32B 2262/067 (2013.01); B32B 2307/732 (2013.01); B32B 2307/75 (2013.01); B32B 2419/04 (2013.01); B32B 2471/00 (2013.01); E04F 2201/0115 (2013.01); E04F 2201/0146 (2013.01); E04F 2201/0153 (2013.01); E04F 2201/0161 (2013.01); E04F 2201/03 (2013.01); E04F 2201/042 (2013.01); E04F 2201/043 (2013.01); E04F 2201/0517 (2013.01); E04F 2201/0547 (2013.01); E04F 2201/0552 (2013.01)] 15 Claims
OG exemplary drawing
 
6. A set of ceramic or stone tiles comprising a first tile provided with a first edge and a second tile provided with a second edge, wherein the tiles are provided with a locking system for locking the first edge to the second edge in a horizontal direction parallel with a tile surface and in a vertical direction perpendicular to the horizontal direction,
wherein said locking system comprises:
a tongue and a horizontal groove for locking in the vertical direction, and
a locking element and a vertical groove for locking in the horizontal direction, and
wherein core grooves are formed in a rear side of the tiles for decreasing their weight,
wherein the core grooves are covered with an underlay material.