Pick-up head for a vacuum cleaner
First Claim
1. 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 comprising:
- a hollow body defining a collection container for receiving and collecting liquid therein;
an outlet member disposed to be in flow communication with the container, the outlet member defining an outlet and including a connector adapted to be connected to the suction hose;
a pick-up inlet member disposed to be in flow communication with the container, the inlet member defining an inlet adapted to be applied to the surface for picking up liquid therefrom;
a flow path member extending in a flow path between the container and the outlet member, the flow path member defining;
a flow restricting orifice adjacent a side wall of the container and near an upper end of the container, the orifice thereby being disposed upstream of the outlet and further 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
a means for reversing the flow off the concave flow surface from a direction generally away from the orifice to a direction toward the orifice.
1 Assignment
0 Petitions
Accused Products
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.
53 Citations
14 Claims
-
1. 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 comprising:
-
a hollow body defining a collection container for receiving and collecting liquid therein; an outlet member disposed to be in flow communication with the container, the outlet member defining an outlet and including a connector adapted to be connected to the suction hose; a pick-up inlet member disposed to be in flow communication with the container, the inlet member defining an inlet adapted to be applied to the surface for picking up liquid therefrom; a flow path member extending in a flow path between the container and the outlet member, the flow path member defining; a flow restricting orifice adjacent a side wall of the container and near an upper end of the container, the orifice thereby being disposed upstream of the outlet and further 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 a means for reversing the flow off the concave flow surface from a direction generally away from the orifice to a direction toward the orifice. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. 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 comprising:
-
a hollow body defining a collection container for receiving and collecting liquid therein; an outlet member disposed to be in flow communication with the container, the outlet member defining an outlet and including a connector adapted to be connected to the suction hose; a pick-up inlet member disposed to be in flow communication with the container, the inlet member defining an inlet adapted to be applied to the surface for picking up liquid therefrom; a flow path member extending in a flow path between the container and the outlet member, the flow path member defining a flow restricting orifice disposed upstream of the outlet and having a cross-sectional area significantly less than that of the outlet and that of the inlet, the flow path member further including a filter element disposed in the flow path between the orifice and the outlet.
-
-
11. 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 comprising:
-
a hollow body defining a collection container for receiving and collecting liquid therein; a pick-up inlet member disposed to be in flow communication with the container, the inlet member defining an inlet adapted to be applied to the surface for picking up liquid therefrom; an outlet member disposed to be in flow communication with the container, the outlet member defining an outlet and including a connector adapted to be connected to the suction hose, the connector comprising a socket adapted to receive an end fitting of the suction hose and being configured to define an air-bleed passageway to an interior region of the outlet member; a flow path member extending in a flow path between the container and the outlet member, the flow path member defining a flow restricting orifice disposed upstream of the outlet and having a cross-sectional area significantly less than that of the outlet and that of the inlet. - View Dependent Claims (12, 13, 14)
-
Specification