Modular surface such as for use in sports

A module for a modular surface comprising a flexible tile having an upper surface, continuous expansion joints dividing the surface into diamonds with the expansion joints pointed along the module diagonals and blunted along module perpendiculars, support means for engaging an undersurface at a plurality of points to support said surface, said support means so constructed and arranged as to leave the expansion joints floating, and interlocking means for connecting a plurality of said modules, whereby said expansion joints are adapted to accommodate temperature changes while keeping said support means in contact with said undersurface.

A module for a modular surface comprising a flexible square tile having a perforate play surface, a plurality of continuous expansion joints dividing the play surface into a plurality of pads interconnected by the expansion joints at a level below said play surface, the pads being square in shape and oriented such that respective ones of the expansion joints are generally perpendicular to or parallel to the tile diagonal, support pegs connected to support the play surface but leaving the expansion joints floating, and interlocking means for connecting a plurality of the modules together, whereby the expansion joints are adapted to maintain the modular surface in a flat condition while accommodating temperature changes.

A module for a modular surface comprising a square flexible tile having a play surface, a plurality of continuous expansion joints dividing the play surface into separate pads separated by the expansion joints, support means underlying the play surface for support thereof, said support means being arranged to maintain said expansion joints in a floating condition between said pads, thereby to enhance the effectiveness of said expansion joints, the expansion joints being arranged to form pads which are square with respective expansion joints generally perpendicular to or parallel to the diagonal of the tile, whereby the largest number of expansion joints is positioned along the tile diagonal and oriented for maximum effectiveness along said diagonal to maintain the tile flat while accommodating temperature changes.

A modular surface comprising a plurality of square modules interconnected to form said surface, each module being a square tile having a plurality of support means for engaging an undersurface at a plurality of points to support said surface, each module also having a plurality of continuous floating expansion joints dividing said surface into a plurality of square pads supported by said support means and having diagonals generally parallel to the tile edges, whereby the number and effectiveness of the expansion joints is greatest along the tile diagonal to maintain the support means in contact with the undersurface under conditions of changing temperature.