Patent ID: 7114877
Filing Date: 2006-10-03
Classification: E01C,E02B

Abstract:
1. A drainage box for location and use below the surface of a sports field or landscaped area, which drainage box comprises: a) a container having a substantially solid bottom surface and having sides forming a substantially continuous perimeter, the container being removable from the ground and further having a top opening and having a size and shape which can be located below the playing surface a sufficient distance and is adapted to permit persons to play above the drainage box, the container being removable from the ground; b) the container having at least one support surface associated with the top opening; and c) a water permeable cover over the top opening and supported by the support surface, the water permeable cover on the support surface comprising a support grate and a water permeable mesh over the support grate and a protective grate above the water permeable mesh, the cover having a strength which is adapted to permit persons to play above the landscape material on the drainage box but which resists entry of solids into the box; d) the water permeable cover being removable from the top opening to allow cleaning of the container and then replaceable for relocation below the surface of the sports field or landscaped area and to permit play above the box without damage to the box; e) the box having one or more locations in its sides or bottom which can be associated with an exit pipe for drainage of water from the box.