Abstract: A security panel system which may be assembled into security panels, having at least one pan member with interlockable ribs for formation of continuous, interlocking pan surface, at least one channel member having a web, a first flange and a second flange having at least one notch for passage of pan ribs therethrough for attachable abutment of the pan ribs against the first flange and at least one trim member attachable to the channel member, for placement against the pan member so that the pan member is captured between the channel member and the trim member. A pair of channel members may be combined along their webs to form a carrier member having pairs of first and second flanges that are oriented opposite each other.

Abstract: A ceiling system constituted of inverted T support members arranged in a horizontal grid, wherein T members aligned in end-to-end relation are interconnected by a splice member bridging the joint between them and having a pair of horizontally spaced clips respectively projecting through openings in end portions of the webs of the interconnected T members. The splice member is a sheet element having portions bent laterally and downwardly about horizontal bending axes to form the clips, and side edges bent obliquely about vertical bending axes for bearing against the webs of the T members to cooperate with the clips in securely interlocking the splice member and the T members.

Abstract: Interlocking vinyl siding panels are formed from vinyl sheets. A sheet of vinyl is extruded with a V-shaped bend along one of its edges, and a Z-shaped bend intermediate its edges. The extruded sheet of vinyl is then formed, while in a hot, semi-viscous state into the final siding profile. As the siding profile is formed, the V-shaped bend is formed into a first locking profile and the Z-shaped bend is formed into a second locking profile. The first locking profile is dimensioned for a snap-type engagement with the second locking profile of another similarly formed siding member.

Abstract: A roofing panel system including a plurality of elongated panels disposed in side-by-side parallel array on a supporting roof structure, each panel having an upwardly projecting longitudinal flange along each side with the flanges of adjacent panels together constituting a standing seam at the junction of the panels. A plurality of clips, fastened to the roof structure along each standing seam and interposed between the adjacent panel flanges constituting that seam, engage the tops of the adjacent panel flanges to anchor the panels to the roof structure and also support the adjacent panels from below. Each standing seam is covered by an elongated cap member snap-fitted over the tops of the adjacent panel flanges and bearing sealant material which engages the tops of the latter flanges to seal the seam. The top portion of each panel flange is bent toward the other flange of the panel to form a leg, over which the cap member extends, having a flat upwardly facing surface for contact with the sealant material.