Title:
WINDOW CLEANING DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/022200
Kind Code:
A2
Abstract:
The present invention relates to a window cleaning device including a first cleaning unit and a second cleaning unit which are respectively attached on both sides of a window by magnetism. The device includes a first magnetic module included in the first cleaning unit; a second magnetic module included in the second cleaning unit; and a wheel member which is provided to at least one among the first and the second unit and moves the window cleaning device, wherein the wheel member includes a wheel having a plurality of grooves on an external diameter unit; a wheel cover made of an elastic material which surrounds the external diameter unit of the wheel and generates frictional force by coming in contact with the window; and a wheel bearing which is connected to the wheel and delivers turning force, and a part of the wheel cover is inserted into the grooves formed on the external diameter unit of the wheel.
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Inventors:
RYU MAN HYUN (KR)
Application Number:
PCT/KR2012/005845
Publication Date:
February 14, 2013
Filing Date:
July 23, 2012
Export Citation:
Assignee:
ILSHIM GLOBAL CO LTD (KR)
RYU MAN HYUN (KR)
RYU MAN HYUN (KR)
International Classes:
A47L1/12
Foreign References:
| KR100780647B1 | 2007-11-30 | |||
| US5660447A | 1997-08-26 |
Attorney, Agent or Firm:
KANG, MOON HO (KR)
강문호 (KR)
강문호 (KR)
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Claims: