Abstract

A panel has a first sheet formed of a first material, and a second material applied to at least a portion of one face of the first sheet. At least two opposed edge portions of the panel each form an edge retaining rail for retaining the respective edge portion within a channel member of a frame, and each edge retaining rail having a greater thickness than the portion of the panel immediately adjacent the respective edge retaining rail.

IPC Classes  ?

• E06B 3/28 - Wing frames not characterised by the manner of movement with additional removable glass panes or the like, framed or unframed
• E06B 3/54 - Fixing of glass panes or like plates
• E06B 3/66 - Units comprising two or more parallel glass or like panes in spaced relationship, the panes being permanently secured together, e.g. along the edges
• E06B 1/36 - Frames uniquely adapted for windows
• E04C 2/20 - Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the likeBuilding elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of plasticsBuilding elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of foamed products of plastics
• E04C 2/34 - Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
• E04C 2/38 - Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure with attached ribs, flanges, or the like, e.g. framed panels

Abstract

A method of cold forming a length of polycarbonate sheet, including the step of feeding the polycarbonate sheet through a roll forming station. A security panel having opposed side edges bent to extend back over a central portion of the panel between the side edges so as to form retaining rails for retaining the security panel within a channelled frame of a security closure, wherein the opposed side edges are bent by a method of roll forming.

IPC Classes  ?

• B29C 53/04 - Bending or folding of plates or sheets
• B21B 19/06 - Rolling hollow basic material
• B21D 19/12 - Edge-curling
• E04B 2/52 - Walls having cavities between, as well as in, the elementsWalls of elements each consisting of two or more parts, kept in distance by means of spacers, at least one of the parts having cavities the walls being characterised by fillings in some of the cavities forming load-bearing pillars or beams
• E04B 2/82 - Removable non-load-bearing partitionsPartitions with a free upper edge characterised by the manner in which edges are connected to the buildingMeans thereforSpecial details of easily-removable partitions
• E04D 3/362 - ConnectingFastening by specially-profiled marginal portions of the slabs or sheets by locking the edge of one slab or sheet within the profiled marginal portion of the adjacent slab or sheet, e.g. using separate connecting elements
• E06B 9/06 - Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
• E06B 9/15 - Roller shutters with closing members formed of slats or the like
• E04D 3/363 - ConnectingFastening by specially-profiled marginal portions of the slabs or sheets with snap action