Sweeper with sweeping elements
US8656544B1 · kind B1 · utility
6Cited by
8References
13Claims
0Family size
Inventor
Key dates
| Filing date | Jul 13, 2011 |
| Grant date | Feb 25, 2014 |
| Priority date | — |
| Expiry date | Sep 19, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L11/4069
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The present invention is a sweeper incorporating multiple rotation elements mounted adjacently in an rotationally offset sequence on a common driven axle. Each rotation element comprises a central shaft support from which extends lightweight extension arms that have laterally elongated spatulate paddles at their ends. The extension arms may be curved so that in operation a terminal edge of each paddle lags the rest of the paddle surface in approaching and sweeping across the floor surface and is quite easily deflected upward from a floor surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.