Importance

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Abstract

An attachment for connection to a suction hose of a vacuum cleaner for enabling liquid to be picked up from a surface and collected by the attachment. The attachment comprises a hollow body defining a collection container for receiving and collecting liquid therein; an outlet member defining an outlet and including a connector adapted to be connected to the suction hose; a pick-up inlet member defining an inlet adapted to pick up liquid from the surface; and a flow path member extending in a flow path between the container and the outlet member. The flow path member defines a flow restricting orifice adjacent a side wall of the container and near an upper end of the container, the orifice having a cross-sectional area significantly less than that of the outlet and that of the inlet; an air expansion chamber disposed in a flow path between the orifice and the outlet; a vortex chamber disposed in a flow path upstream of and adjacent the orifice, the vortex chamber including a curved wall defining a concave flow surface extending across the flow path member from a position opposite the orifice to a position adjacent the orifice such that a flow off the concave flow surface is directed generally away from the orifice; and an element for reversing the flow off the concave flow surface from a direction generally away from the orifice to a direction toward the orifice.

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First Claim