Working tool
US11919134B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2020 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Dec 19, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/008
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A tool having a working piston that moves along a working axis, a drive, for driving the working piston along the working axis, the drive having an electrical capacitor, a squirrel-cage rotor arranged on the working piston and an excitation coil, wherein current flows through the coil during rapid discharge of the capacitor and generates a magnetic field that accelerates the working piston, the tool having a frame of a soft-magnetic and electrically conducting material surrounding the excitation coil and extending in a circumferential direction with respect to the working axis, the frame having one or more at least partial interruptions, which extend over a significant part of a radial extent of the frame with respect to the working axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.