Gas separation – With nonliquid cleaning means for separating media – Interdigitated comb and separating media
Reexamination Certificate
2004-08-06
2009-02-24
Smith, Duane S (Department: 1797)
Gas separation
With nonliquid cleaning means for separating media
Interdigitated comb and separating media
C055S282000, C055S283000, C055SDIG020, C055SDIG030, C055S298000, C055S295000, C015S347000, C015S352000, C015S353000, C210S413000
Reexamination Certificate
active
07494520
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.
REFERENCES:
patent: 3145164 (1964-08-01), Johkman
patent: 3246754 (1966-04-01), Sackett
patent: 3778864 (1973-12-01), Scherer
patent: 4214878 (1980-07-01), Weiss
patent: 4246011 (1981-01-01), Oberdorfer
patent: 4983290 (1991-01-01), Schumann
patent: 6625845 (2003-09-01), Matsumoto et al.
patent: 2001/0025395 (2001-10-01), Matsumoto et al.
patent: 2003/0159235 (2003-08-01), Oh
patent: 1319372 (2001-10-01), None
patent: 1004780 (1954-07-01), None
patent: 1136028 (2001-09-01), None
patent: 1136028 (2001-09-01), None
patent: 2836056 (2003-08-01), None
patent: 2293993 (1996-04-01), None
English language Abstract of CN 1319372.
Chung Choon-Myun
Lee Yong-Woo
Nam Hyeun-Sik
Rew Ho-Seon
Greenblum & Bernstein P.L.C.
LG Electronics Inc.
Pham Minh-Chau T
Smith Duane S
LandOfFree
Filter device for vacuum cleaner does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Filter device for vacuum cleaner, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Filter device for vacuum cleaner will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4095434