Device in connection with hand-operated working machine
US6442841B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1998 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Jun 23, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23D59/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A device in connection with a hand-operated working machine with a water flow directed to the working tool comprises a first control which is a control (15) for a drive motor (3) for the tool, and a second control which is a control (17) for the water supply to the tool. A water control valve (45) in a water supply conduit (14) can be adjusted to adopt chosen opening positions, and is arranged constantly to be kept open in any chosen opening position when the motor is running the tool under influence of the drive motor control. The chosen opening positions are adjustable, i.e. the through opening of the valve can be increased or decreased by using water supply control (17).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.