Importance

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Abstract

In one aspect of the invention, the tool includes: a housing having a front wall, a back wall, a top wall connecting the front and back walls, an interior surface, a liquid-delivery opening, and a soil-uptake opening, the soil-uptake opening being connectable to a vacuum source; a first squeegee blade depending from the front wall; a second squeegee blade depending from the back wall; an interior space defined by the interior surface, first squeegee blade, and second squeegee blade; a diverter valve connected to the housing, the diverter valve having at least an inlet, a first outlet, a second outlet, and a diverter, the diverter capable of selectively directing the flow of a pressurized liquid from the inlet to either the first outlet or the second outlet, the diverter valve being connectable to a pressurized-liquid source; a high-pressure nozzle connected to the first outlet of the diverter valve, the high-pressure nozzle constructed and arranged to deliver a liquid into the interior space via the liquid-delivery opening; and a low-pressure nozzle connected to the second outlet of the diverter valve, the low-pressure nozzle constructed and arranged to deliver a liquid exterior to the interior space.

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First Claim