This application relates to the field of reveal architectural panels and a tool or clamp for assembly thereof. The apparatus and method replace prior art assembly methods and fasteners with adhesives and a dedicated particularly designed clamp to facilitate assembly. The frame members are modified to facilitate assembly with adhesive sealants and removal of mechanical fasteners.

This application relates to the field of reveal architectural panels and a tool or clamp for assembly thereof. The apparatus and method replace prior art assembly methods and fasteners with adhesives and a dedicated particularly designed clamp to facilitate assembly. The frame members are modified to facilitate assembly with adhesive sealants and removal of mechanical fasteners.

Building panels provided with a locking system for vertical and horizontal locking of a first edge and a second edge of adjacent panels. The locking system includes a displaceable tongue at least partly arranged in a displacement groove, a tongue groove, a cavity provided in a strip at the first edge, and a protrusion extending downwards at the second edge. The displaceable tongue is arranged to be displaced at least partly into the tongue groove during locking, and wherein the protrusion is arranged to be located in least a portion of the cavity when the panels are locked vertically and horizontally.

Building panels provided with a locking system for vertical and horizontal locking of a first edge and a second edge of adjacent panels. The locking system includes a displaceable tongue at least partly arranged in a displacement groove, a tongue groove, a cavity provided in a strip at the first edge, and a protrusion extending downwards at the second edge. The displaceable tongue is arranged to be displaced at least partly into the tongue groove during locking, and wherein the protrusion is arranged to be located in least a portion of the cavity when the panels are locked vertically and horizontally.

An attic door support and trimming system includes a plurality of frame sections each having a base wall with an inner edge, an outer edge, a top side and a bottom side, a first end and a second end. A vertical wall extends upwardly from the base wall and is spaced from the inner and outer edges. The first and second ends of different frame sections are positionable against each other to form a rectangular shaped frame. The frame sections each are telescopic to allow a size of the rectangular shaped frame to be adjusted. The top side of the first flange is abuttable against the ceiling adjacent to the opening and the top of the second flange supports a cover when the cover is placed in a closed position closing the opening.

An attic door support and trimming system includes a plurality of frame sections each having a base wall with an inner edge, an outer edge, a top side and a bottom side, a first end and a second end. A vertical wall extends upwardly from the base wall and is spaced from the inner and outer edges. The first and second ends of different frame sections are positionable against each other to form a rectangular shaped frame. The frame sections each are telescopic to allow a size of the rectangular shaped frame to be adjusted. The top side of the first flange is abuttable against the ceiling adjacent to the opening and the top of the second flange supports a cover when the cover is placed in a closed position closing the opening.

A hybrid core comprising a matrix and tubular structural reinforcements, such as a ductile matrix core reinforced with ductile hollow tubes, as well as panels which comprise such hybrid core. Embodiments of the invention manifest resistance to both interfacial debonding and ballistic penetration.

A hybrid core comprising a matrix and tubular structural reinforcements, such as a ductile matrix core reinforced with ductile hollow tubes, as well as panels which comprise such hybrid core. Embodiments of the invention manifest resistance to both interfacial debonding and ballistic penetration.

A building system including a plurality of building panel members having elongated slots upon a top surface and four side surfaces thereof, and a plurality connector members having a bowtie cross-sectional shape and adapted to slidably and snugly fit within the elongated slots to thereby releasably connect the plurality of building panel members together to form a variety of structures.

Floor panels (1, 1′) are shown, which are provided with a mechanical locking system that may be locked with a vertical displacement of a first panel against a second panel. The locking system includes a flexible strip (6) that during locking bends upwardly or downwardly. The locking system includes a first (7a) and a second (7b) joint edge section with different locking functions. One section provides a horizontal locking and another section provides a vertical locking.