Particle-aspirating accessory for a hammer drill
US4097176A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1976 |
| Grant date | Jun 27, 1978 |
| Priority date | — |
| Expiry date | Sep 22, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/98
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A hammer drill is provided with an accessory that is rotatably supported on the chuck of the drill and has a handle fixed to the support rotatable on the drill chuck. Structure is provided forming a throughgoing passage extending from the tool through the handle to the outer end of the handle and a flexible conduit is connected to this handle at the outer end thereof for drawing gas and particles from the tool through the passage. The structure may surround an intermediate portion of the tool at the radial opening of an axial bore through the tool so that particles and the like can be aspirated directly through the tool. Alternately a telescoping tube is provided connected at its rear end to the passage at the support and at its front end to a cup through whose base the drill passes, so that this cup is pressed against the workpiece during the drilling operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.