Power tool with magneto-pneumatic striking mechanism
US10792799B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2013 |
| Grant date | Oct 6, 2020 |
| Priority date | — |
| Expiry date | Nov 13, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2007/1692
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power tool 1 including a bit socket 6 which is configured to hold a chiseling bit 7 so that the latter can move along an axis of movement 3. A magneto-pneumatic striking mechanism 2 includes a primary drive 22 that is arranged around the axis of movement 3 and that has a first magnet coil 46, a permanently and radially magnetizable ring magnet 42 and a second magnet coil 47 arranged consecutively in the striking direction 5. On the axis of movement 3, inside the magnet coils 46, 47, the striking mechanism 2 has a striker 4 and a striking block 13 arranged consecutively in the striking direction 5. An air cushion 23 acts upon the striker 4 in the striking direction 5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.