Corner frames for protecting and enhancing foamboard and other similar materials

In combination with a four-cornered foamboard with a front and back, corner frames for each of the four-cornered foamboard to protect the four corners of said foamboard and to enhance the appearance of a decorative material on said foamboard and provide a decorative finished look for said foamboard,

• each corner frame comprising,
• a base having two adjoining edges to form a corner and coincide with the corners of said foamboard and for engaging the back of said foamboard,
• a pair of sidewalls each having four side edges, with one side edge of each sidewall of said pair connected to adjoining edges of the base and a second side edge of each of said four side edges connected to one another where said adjoining edges are connected together, two side edges of said four side edges of said sidewalls spaced from said sidewall which is connected to said adjoining edge and defining the width of each said sidewall and coinciding with the thickness of said foamboard,
• a top having two edges engaging said two side edges which are spaced from the sidewall and engaging the front of said foamboard and wherein said top is separate from said base and sidewalls and having means for slidelocking said top with said sidewalls so that each corner of said foamboard is received between said top and said base,
• said base having means defining an area which extends beyond the sidewalls, and
• means cooperable with said area for connecting said corner frame to each of the corners of said foamboard.

A corner frame comprising a two-piece assembly for use with planar materials of a given thickness which have front and back sides and corners to protect the corners of said planar materials and to enhance the appearance of a decorative materials on said planar materials and provide a decorative finished look for said planar materials comprising,

• one piece comprising a base having two adjoining edges to form a corner and to coincide with the corners of said materials and adapted to engage the back side of said materials,
• a pair of sidewalls each having four side edges, with one sidewall of said pair connected to the adjoining edges of said base and a second side edge connected to one another, the other edges of said sidewalls defining the width of each said sidewall so as to coincide with the thickness of said planar materials to be used with said corner frame,
• a second piece comprising a top having two edges engaging said sidewalls and adapted to engage the front side of said planar materials, and means for slidelocking said top to said base,
• said means for slidelocking comprising tongue and groove means defined by a pair of tongues extending from two edges of said top and a pair of grooves in said two adjoining edges of said base, each of said tongues being thinner and shorter than the width and length of the two edges and each said grooves being complimentary to said tongues in width, length and depth so as to receive said tongues.