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:
Feb. 24, 2009
Filed:
Aug. 06, 2004
Hyeun-sik Nam, Seoul, KR;
Yong-woo Lee, Seoul, KR;
Choon-myun Chung, Gyeonggi-Do, KR;
Ho-seon Rew, Seoul, KR;
Hyeun-Sik Nam, Seoul, KR;
Yong-Woo Lee, Seoul, KR;
Choon-Myun Chung, Gyeonggi-Do, KR;
Ho-Seon Rew, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Abstract
A filter device for a vacuum cleaner includes a casing having a collecting space therein, a suction opening through which air including dust is sucked, formed eccentrically at one side so that sucked air can be rotated and a discharge opening through which purified air is discharged. A filter is installed at an internal space of the casing, for filtering dust from air sucked through the suction opening. A filter cleaning unit is disposed at an outer circumferential surface of the filter, for cleaning the filter by being rotated by a rotation force of air sucked through the suction opening. A rotation restrainer is provided for restraining rotation of the filter cleaning unit when the filter cleaning unit reaches a topmost position. Accordingly, fine dust attached to the filter in cleaning is removed so that a channel of the filter can be prevented from being closed.