Hydraulic and earth engineering – Fluid control – treatment – or containment – Fluid storage in earthen cavity
Reexamination Certificate
2005-02-01
2005-02-01
Will, Thomas B. (Department: 3671)
Hydraulic and earth engineering
Fluid control, treatment, or containment
Fluid storage in earthen cavity
C037S342000, C037S343000, C037S344000, C037S345000, C405S258100, C405S303000
Reexamination Certificate
active
06848860
ABSTRACT:
The apparatuses for improving the permeability of a fluid containment basin having a plurality of ridges and furrows in the bottom of the basin are configured to disturb sediment that has settled on the ridges so as to place the sediment back into suspension. In one configuration, the apparatus comprises a tool support frame adapted to support one or more ridge cleaning tools on top of the ridges. The tools include dragging, discing and grinding tools. The discing tool is configured with a flexible axle to allow the tool to move in response to changes in the contour of the ridge. In another configuration, a boat or other device is moved across the basin above the ridges to cause wave energy from the boat's propellor to disturb the sediment on the ridges. The tool support frame with one or more ridge cleaning tools can be pulled behind the boat.
REFERENCES:
patent: 3885331 (1975-05-01), Mathieu
patent: 5406725 (1995-04-01), Breese
patent: 5412884 (1995-05-01), Staples et al.
Mayo Tara L.
Ryan Richard A.
Will Thomas B.
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