FOOTBALL GROUND Russian patent published in 2008 - IPC E01C13/04 

FIELD: construction, particularly sport structures.

SUBSTANCE: football ground has artificial covering made as a number of three-dimensional members connected with each other. Each member is made of foam-rubber and has thickness of 0.13-0.5 m. The covering is of laminated type. Upper layer has apparent density of 10-39 kg/m³. Lower layer has apparent density of 40-200 kg/m³.

EFFECT: provision of intensive football player training due to increased load to be applied to muscle of thigh (namely to sartorius) and shank (namely to anterior tibial muscle).

1 cl, 2 dwg