Window cleaning apparatus and method of controlling the same
US10028629B2 · kind B2 · utility
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4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2013 |
| Grant date | Jul 24, 2018 |
| Priority date | — |
| Expiry date | Mar 29, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L2201/04
- WIPO fieldFurniture, games
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.