Automatic device for washing windows
US4257138A · kind A · utility
16Cited by
5References
2Claims
0Family size
Inventors
Key dates
| Filing date | Jul 23, 1979 |
| Grant date | Mar 24, 1981 |
| Priority date | — |
| Expiry date | Jul 23, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L1/02
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An electrically powered apparatus for automatically washing and wiping an outer side of a building window; the apparatus including a horizontal rotary brush rotating against the window and at the same time being vertically carried on vertical screws turned by an electric motor, a detergent solution supply tank above the window being contacted by the brush at its upper limit of travel so to fill a chamber inside the brush from which the solution is gradually dispensed to the brush bristles, a wiper blade above and below the brush wiping the window dry of the solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.