James M Courter

US Patent:

20060029472, Feb 9, 2006

Filed:

Aug 8, 2005

Appl. No.:

11/200308

Inventors:

Charles Blackwood - Oklahoma City OK, US
James Courter - Edmond OK, US

International Classification:

E02B 11/00

US Classification:

405036000, 405038000

Abstract:

The present invention is directed to a subsurface drainage system for a playing surface. The subsurface drainage system includes a subgrade, an intermediate layer disposed over the subgrade, a layer of semi-permeable filter fabric disposed over the intermediate layer, an upper permeable layer disposed over the layer of filter fabric and on which the playing surface is disposed, and a hydronic piping network disposed in the upper layer near the layer of filter fabric. The layer of filter fabric has a permeability less than the permeability of the intermediate layer and such that the layer of filter fabric functions as a perching layer to support a perched water table above the filter fabric. The hydronic piping network is positioned within the perched water table such that the water of the perched water table functions as a heat exchanger to facilitate heating and cooling of the upper layer upon the hydronic piping network being heated or cooled.

US Patent:

20060120804, Jun 8, 2006

Filed:

Aug 31, 2005

Appl. No.:

11/216846

Inventors:

Charles Blackwood - Oklahoma City OK, US
James Courter - Edmond OK, US

International Classification:

E03F 1/00
E02B 11/00

US Classification:

405046000, 405036000, 405041000

Abstract:

A subsurface drainage assembly for directing fluid drainage from a surface is disclosed. The subsurface drainage assembly includes a plurality of drain structure panels linked together in a manner that permits movement of one drain structure panel relative to the adjacent drain structure panel. The drain structure panels have a laterally extensive backing grid and a plurality of spaced apart tubular support members projecting therefrom.