Hydraulic and earth engineering – Drainage or irrigation – Porous waterway – e.g. – sand drain – etc.
Reexamination Certificate
2007-04-03
2007-04-03
Lagman, Frederick L. (Department: 3673)
Hydraulic and earth engineering
Drainage or irrigation
Porous waterway, e.g., sand drain, etc.
C405S043000, C405S045000, C405S036000, C405S053000, C405S052000
Reexamination Certificate
active
10301696
ABSTRACT:
A water resource recycling system includes an environmental permeable flooring which allows the rain on the ground be accumulated and quickly permeate into the underground. A vertical overflow duct is drilled deep into the permeable stratum under the ground to further draw the rain through the impermeable (clay) stratum to the deeper groundwater stratum. A plurality of water reservoirs pre-buried under the ground nearby the vertical overflow duct are connected to the vertical overflow duct, thereby as the rain permeated from the ground surface to the vertical overflow duct becomes saturated, the rain will flow to the water reservoirs of different size. Each water reservoir is connected to a water-drawing pipe extended to the ground surface such that the rain can be completely absorbed and stored by the earth for preventing heat island effect.
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patent: 5064308 (1991-11-01), Almond et al.
patent: 5183355 (1993-02-01), Treat et al.
patent: 6962464 (2005-11-01), Chen
Lagman Frederick L.
Lei Leong C.
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