Electric power tool
US11890727B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2021 |
| Grant date | Feb 6, 2024 |
| Priority date | — |
| Expiry date | May 9, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B23/1405
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An electric power tool includes: a driving shaft that is rotated by a motor; an output shaft on which a front-end tool is attachable; and a torque transmission mechanism that transmits a torque produced by the rotation of the driving shaft to the output shaft. The torque transmission mechanism includes a magnet coupling including a driving magnet member coupled to a side of the driving shaft and a driven magnet member coupled to a side of the output shaft, and the driving magnet member and the driven magnet member are provided such that respective magnetic surfaces face each other, S-poles and N-poles being alternately arranged on each of the magnetic surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.