Hydraulic and earth engineering – Drainage or irrigation – Including subsurface moisture barrier
Reexamination Certificate
2005-04-12
2005-04-12
Lee, Jong-Suk (Department: 3673)
Hydraulic and earth engineering
Drainage or irrigation
Including subsurface moisture barrier
C405S036000, C405S043000, C405S302700, C428S017000
Reexamination Certificate
active
06877932
ABSTRACT:
A drainage system is provided for a synthetic grass turf assembly having a flexible and water permeable sheet backing for installation on a supporting soil substrate to provide a game playing surface. The draining system of the present invention prevents water from accumulating on the turf surface, which could cause the top-dressing layer to “float” and be moved by inundation. The draining system of the present invention includes a spacing grid disposed between the backing of the turf. The spacing grid is structured to permit water not only to be drained vertically through the spacing grid, but also to be drained horizontally through the spacing grid to the edges of the field. The spacing grid is made from one or more types of geotextile or plastics material with an adequate flexibility to improve the impact absorption capabilities and resilience of the synthetic grass turf assembly.
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Factor & Lake, Ltd.
Fieldturf (IP) Inc.
Lee Jong-Suk
LandOfFree
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