Device for cleaning a surface, comprising at least one rotatable brush
US10349796B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2011 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Jun 21, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA46B13/001
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A device for cleaning a surface (11) comprises at least one rotatable brush (3,4) which is provided with flexible brush elements (18) for contacting the surface (11) and picking up dirt particles (10) and liquid which are present on the surface (11) during a dirt pick-up period of each revolution of the brush (3, 4), and means for driving the brush (3, 4). A linear mass density of the flexible brush elements (18) is chosen such as to be lower than 50 g per 10 km, at least at tip portions, and an acceleration at tips of the brush elements (18) is set such as to be at least 3,000 m/sec2, at least at some time during another period of each revolution of the brush (3, 4) than the dirt pick-up period, namely a period in which the brush elements (18) are free from contact to the surface (11).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.