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. 11, 2007
Filed:
Oct. 23, 2003
Yoshiki Kuroki, Shiga, JP;
Seiji Yamaguchi, Shiga, JP;
Tomonori Kato, Shiga, JP;
Masashi Okushima, Shiga, JP;
Yuichi Shimizu, Shiga, JP;
Tomomi Mitani, Shiga, JP;
Hiroshi Mori, Shiga, JP;
Toru Odachi, Shiga, JP;
Yoshiaki Onishi, Shiga, JP;
Hidenori Kitamura, Shiga, JP;
Toshifumi Miyahara, Shiga, JP;
Takaaki Ogawa, Shiga, JP;
Hirokazu Nagaoka, Shiga, JP;
Yoshiki Kuroki, Shiga, JP;
Seiji Yamaguchi, Shiga, JP;
Tomonori Kato, Shiga, JP;
Masashi Okushima, Shiga, JP;
Yuichi Shimizu, Shiga, JP;
Tomomi Mitani, Shiga, JP;
Hiroshi Mori, Shiga, JP;
Toru Odachi, Shiga, JP;
Yoshiaki Onishi, Shiga, JP;
Hidenori Kitamura, Shiga, JP;
Toshifumi Miyahara, Shiga, JP;
Takaaki Ogawa, Shiga, JP;
Hirokazu Nagaoka, Shiga, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A vacuum cleaner includes a first dirt separation unit and a second dirt separation unit. The first dirt separation unit has a first inlet port through which a suction air stream including dirt particles is introduced thereinto, and the second dirt separation unit has a second inlet port through which the air stream introduced into the first dirt separation unit is introduced into the second dirt separation. The first and the second inlet port are disposed such that they are not registered with each other. Accordingly, the dirt particles suctioned are separated in two stages, thereby decreasing the possibility of occlusion of a filter and rapid deterioration of a suction force.