An insert for lifting and leveling a precast concrete slab is provided. The insert includes a sleeve that extends through the concrete slab and has two distinct threaded portions on an inner surface of the sleeve. This configuration allows a lifting bolt to be positioned into an upper end of the sleeve to lift the concrete slab, and a different-sized leveling bolt to be positioned in the sleeve to selectively elevate or raise part of the concrete slab relative to a ground surface.

A removable artificial turf panel system with an artificial turf panel that has a plurality of upstanding ribbons extending from a backing layer. An infill layer is interspersed between the upstanding ribbons on the backing layer. The outside of the backing layer may be provided with one of a magnet and a ferromagnetic material. The magnet/ferromagnetic material cooperates with a corresponding magnet/ferromagnetic material disposed in a channel on a layer of elastomeric material that supports the artificial turf panel. Accordingly, an artificial turf panel can be removably attached to a section of elastomeric material on an artificial turf playing surface.

A removable artificial turf panel system with an artificial turf panel that has a plurality of upstanding ribbons extending from a backing layer. An infill layer is interspersed between the upstanding ribbons on the backing layer. The outside of the backing layer may be provided with one of a magnet and a ferromagnetic material. The magnet/ferromagnetic material cooperates with a corresponding magnet/ferromagnetic material disposed in a channel on a layer of elastomeric material that supports the artificial turf panel. Accordingly, an artificial turf panel can be removably attached to a section of elastomeric material on an artificial turf playing surface.

A method for forming grooves in a board element. An exemplary method includes arranging the board element in contact with a support member, and forming at least one groove in a rear side of the board element by removing material, such as chips, from the board element by rotating one or more cutting devices including a plurality of tooth elements configured to rotate around a rotational axis. A method further includes counteracting, such as preventing, a displacement of the board element away from the support member during forming of the at least one groove, wherein the counteracting, such as preventing, includes arranging at least a portion of the board element between an obstruction element and the support member.

A floor board including a decorative surface layer applied to a substrate, where the substrate is optionally MDF or HDF material at a side edge thereof, and at least one side edge together with a side edge opposite thereto forming a first pair of opposite side edges of said substrate. The first pair of opposite side edges includes mechanical first and second coupling parts, respectively, allowing the floor board to be coupled at the respective side edges with a similar floor board. Also, a floor board covering consisting of a plurality of the floor boards and a method for manufacturing such floor boards.

A floor panel for forming a floor covering, such that the floor covering includes floor panels, which, on at least one pair of edges, are provided with coupling parts. The coupling parts are substantially manufactured from the material of the floor panel. The coupling parts are configured such that two floor panels, at the pair of edges, can be installed and locked to each other by a downward movement and/or by using a fold-down principle.

The invention relates to the field of home decoration, in particular to a home plate connecting device, which includes a plate and plate connecting piece, a glass and plate connecting piece, a plate bottom edge and ground connecting piece, a decorative plate and plate connecting piece, a doorframe and wall connecting piece and a plate chamfer connecting piece, wherein each of the connecting pieces is provided with a rubber barbed tenon structure and a mortise structure with a barbed accommodation groove. According to the invention, the mortise and tenon structures and a threaded connection manner are adopted for fixation, so that the device can be freely dismounted and conveniently packaged and transported; each part is matched, and is easy to position, so that mounting and dismounting working efficiency is improved; and the dismounted parts are prevented from damage, and are high in reutilization rate, so that the device can be widely applied to the field of home mounting and decoration.

The invention relates to the field of home decoration, in particular to a home plate connecting device, which includes a plate and plate connecting piece, a glass and plate connecting piece, a plate bottom edge and ground connecting piece, a decorative plate and plate connecting piece, a doorframe and wall connecting piece and a plate chamfer connecting piece, wherein each of the connecting pieces is provided with a rubber barbed tenon structure and a mortise structure with a barbed accommodation groove. According to the invention, the mortise and tenon structures and a threaded connection manner are adopted for fixation, so that the device can be freely dismounted and conveniently packaged and transported; each part is matched, and is easy to position, so that mounting and dismounting working efficiency is improved; and the dismounted parts are prevented from damage, and are high in reutilization rate, so that the device can be widely applied to the field of home mounting and decoration.

A skeleton unit to mount mosaic plates, includes a main body section and an extension section. The main body section is integrally formed by strip pieces perpendicularly crossing each other to provide a grille shape. The extension section extends out from four edges of the main body section and is integrally formed with the main body section. The extension section includes prolongation pieces which respectively extend out from both ends of each strip piece, and parallel strips which connect with the outside ends of each prolongation piece on the same side and are in parallel with the edges of the main body section respectively. The parallel strip has lap joint hole portions, which penetrates the parallel strips and are used to overlap another skeleton unit. The sum of double the length of the prolongation piece and the width of the parallel strip is equal to the length of the grid.

The present invention relates to a new type of furniture, which can be reconfigured into an arbitrarily large number of shapes. The changing of furniture shape is accomplished with an array of individually driven actuators which are used to displace a set of furniture components (or modules) in particular spatial amount in order to cause an overall yet arbitrary furniture shape (or look).