Patent ID: 11919134
Assignee: HILTI AKTIENGESELLSCHAFT
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B  H

Claim 0:
1. A tool having a working piston that moves along a working axis; a drive, for driving the working piston along the working axis, wherein the drive has an electrical capacitor; a squirrel-cage rotor arranged on the working piston; and an excitation coil, wherein current flows through the excitation coil during rapid discharge of the capacitor and generates a magnetic field that accelerates the working piston, wherein the tool has a frame of a soft-magnetic and electrically conducting material, which surrounds the excitation coil and extends in a circumferential direction with respect to the working axis, wherein the frame has 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.