Device having a filter, a filter vibrating means and a scraper used for sucking off drillings
US6202765A · kind A · utility
5Cited by
9References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1999 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Mar 12, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21F5/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A device for sucking off drillings during the drilling of boreholes, comprising a suction fan (9) and a filter (10) as well as an opening closeable by a lid for emptying the drillings reception space (8) preceding the filter (10), in which, for the simple cleaning of the filter (10), the lid (12) is connected with a vibrating mechanism for the filter (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.