Abstract: A display case assembly system includes several closed frame tubes, each closed frame tube including two closed frame tube longitudinal ends, at least one closed frame tube longitudinal end including a fastener receiving structure; several laterally breakable frame tubes, each breakable frame tube including a breakable frame tube mounting section having a fastener port; at least one fastener fitted through the fastener port in one of the mounting section and into one of the fastener receiving structures in one of the closed frame tube longitudinal ends, so that at least one breakable frame tube is fastened to one closed frame tube longitudinal end; a breakable frame tube cover section with snap engagement structures for snap engagement with the mounting section to form a composite tube concealing the at least one fastener; and a panel mounted and extending between the closed frame tube and the breakable frame tube.

Abstract: A display case assembly system includes several closed frame tubes, each closed frame tube including two closed frame tube longitudinal ends, at least one closed frame tube longitudinal end including a fastener receiving structure; several laterally breakable frame tubes, each breakable frame tube including a breakable frame tube mounting section having a fastener port; at least one fastener fitted through the fastener port in one of the mounting section and into one of the fastener receiving structures in one of the closed frame tube longitudinal ends, so that at least one breakable frame tube is fastened to one closed frame tube longitudinal end; a breakable frame tube cover section with snap engagement structures for snap engagement with the mounting section to form a composite tube concealing the at least one fastener; and a panel mounted and extending between the closed frame tube and the breakable frame tube.

Abstract: A shelving system includes a power track having an electric circuit connected to a power source, and at least one shelf structure including a top panel and containing a light source beneath the top panel to radiate light to the shelf structure immediately below it, the shelf structure being removably fitted to the power track so that the light source is electrically connected to the electric circuit.

Abstract: A modular system of coordinated, interlocking building elements for display fixtures, which include a variety of extruded metal parts, assembled by means of various connectors that attach to the extrusions by means of set screws or snap-ins and provide a framework for holding glass panels, shelves, brackets, light fixtures and the like.

Abstract: On an article of furniture an edge assembly is provided which has three edge pieces extending along mutually perpendicular edges of the furniture article forming a corner. Each edge piece in the vicinity of the corner has an insert spine which forms the backbone of the three edge pieces and contours the latter into a plumb and crisp corner assembly. The edge piece and insert spine represent parallel threaded openings which receive socket-set Allen Screws. These Allen Screws are embedded in the threaded openings of the edge pieces at the time of assembly in order to engage and lock the edge pieces into a permanent and secure corner assembly.

Abstract: On an article of furniture an edge assembly is provided which has three edge pieces extending along mutually perpendicular edges of the furniture article forming a corner. Each edge piece in the vicinity of the corner has a pair of generally parallel opposite legs extending inward from an outer wall of the edge piece and defining a recess between them which is open at the inside of the corner. A corner piece presents obliquely disposed legs which extend outward onto the recesses in the edge pieces. The corner pieces present openings in these obliquely disposed legs which receive tapered screws for deforming the corner piece legs into locking engagement with the opposite legs of the respective edge pieces.