Patents Assigned to Duragrid, Inc.
  • Patent number: 4860510
    Abstract: A modular tile for interlocking with other similar tiles to form a surface covering which provides a cushioned surface suitable for use in an outdoor playground environment which allows water to substantially flow thereunder for purposes of draining free from the tile. The tile includes a flat support grid having a top and bottom surface and including a repeating pattern of inersection cross members which are integrally formed with interstitial openings therebetween. A plurality of support legs are attached at the bottom surface of the support gird to raise the grid above the supporting surface of concrete or other material. Means are provided around the perimeter of the support grid to allow attachment of additional grids in an interlocking manner.
    Type: Grant
    Filed: March 14, 1988
    Date of Patent: August 29, 1989
    Assignee: Duragrid, Inc.
    Inventor: Daniel Kotler