Sweeping machine with movable recirculation flap
US6073295A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1998 |
| Grant date | Jun 13, 2000 |
| Priority date | — |
| Expiry date | Aug 25, 2018 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01H1/045
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A sweeping machine has a chassis, wheels for supporting the chassis and a brush mounted on the chassis for rotation to throw debris over the brush and into a debris hopper mounted on the chassis behind the brush. There is a control lever on the chassis for raising and lowering the brush relative to a surface to be swept. As the brush wears, a recirculation flap is positioned between the brush and the debris hopper and located closely adjacent a rear portion of the brush to direct debris not reaching the debris hopper forwardly toward the brush sweeping zone. The recirculation flap is moved toward and away from the brush concurrently with movement of the brush toward the surface being swept as the brush wears, whereby the space between the rear portion of the brush and the recirculation flap remains relatively constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.