A set (1) of tiles (5) adapted to cover a surface (10) perpendicular to a thickness direction (V) of the tiles (5), each of the tiles comprising at least one upper layer (24), and an underlying rigid core layer (22), the core layer and the upper layer being superimposed in the thickness direction, and the core layer defining a lower surface (S) opposite the upper layer. The tiles comprise at least one first tile (15) having a first edge extending in a longitudinal direction (L), the core layer of the first tile (15) defining a connecting groove (28) in the first edge. The tiles comprise at least one second tile (20) having a second edge extending in the longitudinal direction, the core layer of the second tile defining a connecting tongue (34) protruding from the second edge, the connecting tongue being adapted to be snap-fit into the connecting groove in a connecting direction (C) perpendicular to the longitudinal direction (L) and to the thickness direction in a locked configuration of the first tile and the second tile. The lower surface defines an additional groove (30) parallel to the first edge.

Building panels including a first and a second panel and including a locking device. The locking device includes a tongue and an edge groove provided in the second panel and the first panel, respectively, wherein the tongue and the edge groove are configured to cooperate with each other for locking a first edge portion of the first panel to a second edge portion of the second panel in a first direction. The locking device further includes a separate tongue provided in an insertion groove and a tongue groove configured to cooperate with each other for locking the first edge portion to the second edge portion in a second direction. A length of the tongue groove along an edge portion may be smaller than a length of the edge portion. A length of the insertion groove along an edge portion may be smaller than the length of the edge portion.

Floor panels which are provided with a mechanical locking system including a displaceable tongue in a displacement groove. The tongue is moulded and provided with bendable protrusions. 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 includes at least two bow shaped protrusions at a first long edge of the tongue, and wherein the protrusions are arranged bendable in the groove.

A floor may include a substrate having a top side and a bottom side. A top layer may be provided on the substrate. The top layer may consist of a printed thermoplastic film and a thermoplastic transparent or translucent layer provided on the printed thermoplastic film. The top layer may be directly adhered to the substrate by heat welding the printed thermoplastic film and the top side of the substrate, in the absence of a glue layer. The substrate may be a synthetic material board including a filler. The substrate at least at two opposite edges may include coupling means provided in the synthetic material board. The thermoplastic transparent or translucent layer may be provided with a structure.

A floor panel has a rectangular and oblong shape, and includes a substrate and a top layer provided on the substrate and forming a decorative side of the floor panel. The top layer is composed of a print provided on a carrier sheet and a transparent thermoplastic layer situated above the print. The substrate has a thickness from 2 to 10 millimeter and forms at least half of the thickness of the floor panel. The substrate is a polyurethane-based substrate and the transparent thermoplastic layer is polyurethane-based. The floor panel has a length of more than 1.1 meters and has a plurality of reinforcing layers situated outside the center line of the substrate. A reinforcing layer may be provided in combination with the substrate and the top layer.

A first unit (100) including a first member (110) of a releasable fastening arrangement (300) is presented. The releasable fastening arrangement (300) is arranged to provide a mechanical connection of the first unit (100) to a second unit (200), and an electrical connection of a first electrical circuit (120) included in the first unit (100) to a second electrical circuit (220) included in the second unit (200), when a male profile (115) of the first member (110) is inserted into a corresponding female profile (215) included in a second member (210) of the second unit (200). The mechanical connection is provided based on a material deformation of the male profile (115). The electrical connection is provided by contact between one or more first flexible conductors (124) arranged on a first flexible and electrically insulating layer (126) of the first electrical circuit (120) and one or more second flexible conductors (224) arranged on a second flexible and electrically insulating layer (226) of the second electrical circuit (220).

A first unit (100) including a first member (110) of a releasable fastening arrangement (300) is presented. The releasable fastening arrangement (300) is arranged to provide a mechanical connection of the first unit (100) to a second unit (200), and an electrical connection of a first electrical circuit (120) included in the first unit (100) to a second electrical circuit (220) included in the second unit (200), when a male profile (115) of the first member (110) is inserted into a corresponding female profile (215) included in a second member (210) of the second unit (200). The mechanical connection is provided based one or more at least partially resilient latching arm members (117) of the male profile (115) engaging with one or more corresponding slots (217) of the corresponding female profile (215). The electrical connection is provided by contact between one or more first flexible conductors (124) arranged on a first flexible and electrically insulating layer (126) of the first electrical circuit (120) and one or more second flexible conductors (224) arranged on a second flexible and electrically insulating layer (226) of the second electrical circuit (220).

A set of floor panels includes floor panels that are oblong rectangular and have a pair of long edges and a pair of short edges. The long and the short edges are provided with mechanical coupling parts, which allow coupling the floor panels of the set to each other such that a herringbone pattern can be realized herewith.

A connecting system for boards, and a connecting device and a support element for boards are disclosed. The connecting system includes the support element configured to support at least one board and the connecting device configured to releasably fasten the at least one board to the support element. The support element includes at least one lateral surface with at least one locking member arranged on the lateral surface. The connecting device includes at least one arm with a locking member configured for engagement with the locking member of the support element. At least one of the locking member of the support element and the locking member of the connecting device includes a plurality of protrusions forming a plurality of locking positions of the connecting device relative the support element.

A composed element includes at least two panel-shaped elements, which each have an edge zone in which coupling means are present in a profiled part respectively extending in the longitudinal direction of the respective edge zone, and each including an end face extending transversely to the respective edge zone. The profiled parts allow the coupling of the panel-shaped elements together in an interlocking manner. At least one of the panel-shaped elements includes an arrangement which hides from view at least a portion of the profiled part formed at the pertaining edge zone at the location of the end face.