Hand tool machine, in particular drilling machine
US4673318A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1983 |
| Grant date | Jun 16, 1987 |
| Priority date | — |
| Expiry date | Sep 12, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/165
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A hand tool machine, in particular a drill machine, has a feeler device for determining the diameter of a tool element to be used with the hand tool machine. For measuring the tool elements prior to insertion into the clamping element of the hand tool machine, a feeler device is provided which is arranged separately from the clamping element and is connected with an indicator. The diameter determined by the feeler device is administered to a control unit which is controlling the driving motor. The control unit can also receive in addition further information concerning the material to be treated by means of an input device. In view of the measuring value with regard to the diameter of the tool element and the administered information concerning the material, the optimum rotary speed for the tool element and consequently for the driving motor is determined and adjusted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.