Air sweeping apparatus
US6742219B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2001 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | Jun 6, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01H1/0863
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An air sweeping apparatus having a head assembly, a debris conveyer and a receptacle. The head assembly includes a front skirt which is selectively positionable away from a surface to be cleaned to enable debris of different densities and sizes to be collected. After the front skirting of the head assembly is moved past debris, the debris becomes entrained within a flow of air formed by a line of pressurized air as it traverses the surface and the interior surface of the main chamber of the head assembly. Preferably the air flow in the head assembly is skewed with respect to the direction of travel to urge the entrained debris towards an output end of the main chamber. When debris reaches the output end of the main chamber it is transported to a debris receptacle by a low pressure conduit which discharges entrained debris into a first hopper or bin. As the debris enters the first hopper, the heavier material settles and lighter, entrained material is directed through a filter element and onto a second hopper or bin. The second hopper includes a separator which is used to remove light particulate matter. After emerging from the separator, the air stream enters an air handling device…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.