US 12,127,725 B2
Cleaner
Bohyun Nam, Seoul (KR); Namhee Kim, Seoul (KR); Jinju Kim, Seoul (KR); Hyeonjeong An, Seoul (KR); Jungbae Hwang, Seoul (KR); Philjae Hwang, Seoul (KR); Mantae Hwang, Seoul (KR); Eunji Sung, Seoul (KR); and Taekgi Lee, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Nov. 2, 2023, as Appl. No. 18/500,814.
Application 16/865,004 is a division of application No. 15/475,673, filed on Mar. 31, 2017, granted, now 10,638,903, issued on May 5, 2020.
Application 18/500,814 is a continuation of application No. 17/579,138, filed on Jan. 19, 2022, granted, now 11,871,890.
Application 17/579,138 is a continuation of application No. 16/865,004, filed on May 1, 2020, granted, now 11,241,130, issued on Feb. 8, 2022.
Claims priority of application No. 10-2016-0039814 (KR), filed on Mar. 31, 2016; application No. 10-2016-0059472 (KR), filed on May 16, 2016; application No. 10-2016-0070220 (KR), filed on Jun. 7, 2016; application No. 10-2016-0108312 (KR), filed on Aug. 25, 2016; and application No. 10-2016-0183826 (KR), filed on Dec. 30, 2016.
Prior Publication US 2024/0065504 A1, Feb. 29, 2024
Int. Cl. A47L 9/16 (2006.01); A47L 5/24 (2006.01); A47L 9/10 (2006.01); A47L 9/28 (2006.01); A47L 9/32 (2006.01)
CPC A47L 9/1691 (2013.01) [A47L 5/24 (2013.01); A47L 9/106 (2013.01); A47L 9/1641 (2013.01); A47L 9/1683 (2013.01); A47L 9/2884 (2013.01); A47L 9/322 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A cleaner comprising:
a main body that defines an opening and extends in a longitudinal axis;
a suction motor that is disposed in the main body and configured to generate suction force to thereby suction air;
a dust separator that includes a first cyclone configured to generate cyclonic flow and a second cyclone configured to separate dust from air discharged from the first cyclone, an axis of the cyclonic flow being parallel to the longitudinal axis;
a pre-filter configured to filter air that flows into the suction motor; and
a filter unit that includes an exhaust filter, the exhaust filter being configured to filter air discharged from the suction motor, the filter unit being configured to be inserted into and separated from the main body through the opening,
wherein a first length of the pre-filter in a first direction parallel to the axis of the cyclonic flow is greater than a second length of the exhaust filter in the first direction.