Hand-held power tool, in particular drill screw driver
US6142243A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 20, 1999 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Jan 20, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B23/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A hand held power tool has a coupling formed for transmission of torques of different values and including at least two coupling parts provided with transmission members for rotary-fixed connection with one another, a coupling spring having an adjustable tensioning force operatable for holding one of the coupling members of one of the coupling parts in a rotary-locked engagement with another of the coupling members of another of the coupling parts, and blocking members with which the coupling parts are rotary-fixed coupled in addition to the transmission members, and which are bringable in engagement with one another in a drilling operation or an impact drilling operation for transmitting a maximum torque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.