Hand-held power tool
US11904448B2 · kind B2 · utility
0Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2020 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Oct 7, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25D2250/221
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In a control method for a hand-held power tool, a striking mechanism is driven with an electric motor, wherein an exciter piston of the pneumatic striking mechanism is driven periodically by the electric motor and a striking piston of the striking mechanism is coupled to the exciter piston via a pneumatic chamber. The method includes detecting the acceleration of a machine housing along a striking direction of the striking piston in different phases of the movement of the exciter piston; and controlling a rotational speed of an electric motor according to the detected acceleration in the different phases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.