Window cleaning apparatus and method of controlling the same
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United States of America Patent
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Issued Date -
Mar 24, 2016
app pub date -
Mar 29, 2013
filing date -
Mar 29, 2013
priority date (Note) -
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Abstract
A window cleaning apparatus according to an embodiment of the present invention includes a first cleaning unit and a second cleaning unit attached on opposite surfaces of a window, respectively, through a magnetic field, and moving on the opposite surfaces of a window. The window cleaning apparatus includes a first magnetic module included in the first cleaning unit, a second magnetic module included in the second cleaning unit, and a control part moving or rotating at least one of the first and second cleaning units when the magnetic field between the first and second cleaning units is out of a normal range.
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