【発明の名称】電気掃除機用ピックアップヘッド

Japanese Patent JPH11511340

A

PCT No. PCT/GB93/02074 Sec. 371 Date May 8, 1995 Sec. 102(e) Date May 8, 1995 PCT Filed Oct. 6, 1993 PCT Pub. No. WO94/08501 PCT Pub. Date Apr. 28, 1994An 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.

WO/2020/158108	DUST COLLECTION DEVICE
JPH04212319	VACUUM CLEANER
WO/2005/041737	CARPET CLEANING APPARATUS AND METHOD OF CONSTRUCTION

McFray, Andrew Francis
Ricket, Peter David

JP50973594A

October 05, 1999

October 06, 1993

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Bax Limited

A47L7/00; (IPC1-7): A47L7/00

Akiyama Hoomi (2 outside)

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