The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 30, 2002
Filed:
May. 10, 2000
Sachio Shimizu, Tokyo, JP;
Other;
Abstract
In order to elevate dust collecting efficiency by improving a suction work efficiency of a water filter type vacuum cleaner, an air containing dust particles sucked through a sucking opening by virtue of a motor driven blower provided built in a casing of the vacuum cleaner is caused to strike against water previously placed in a water tank to capture inappropriately large dust particles by the water. Moreover, other dust particles pass through a wire netting and then, are sucked together with the water to the blower by channeling the dust particles and water through a suction duct communicated with the blower. The dust particles contained in the sucked air are completely captured by the water by stirring the air and water at a high speed rotation of the blower, and the air and water are then conveyed into the water of the water tank. In the water tank, bubbles are generated by a bubble generating filter to naturally separate the water and the air, whereby clean exhaust air is provided.