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:
Dec. 25, 2007
Filed:
Jan. 09, 2004
Hiroshi Mori, Shiga, JP;
Toru Odachi, Shiga, JP;
Kenichiro Sunaba, Shiga, JP;
Tetsuo Imai, Shiga, JP;
Hiroshi Mori, Shiga, JP;
Toru Odachi, Shiga, JP;
Kenichiro Sunaba, Shiga, JP;
Tetsuo Imai, Shiga, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An electric vacuum cleaner includes an inlet port through which a suctioned air stream including dirt particles pass and a centrifugal separation member having a substantially circular space therein. The centrifugal separation member has a swirl portion to swirl the dust-laden suction air stream along an inner surface of the centrifugal separation member. By forming swirl passageway between the swirl portion and the inner surface of the centrifugal separation member, the high velocity swirling air stream can be made and consequently an efficiency of separating the dirt particles from the suction air and collecting the dirt particles can be improved.