	US 12,128,536 B2
	Working tool
Chafic Abu Antoun, Buchs (CH); Tilo Dittrich, Feldkirch (AT); Albert Binder, Buchs (CH); Manuel Gut, Göfis (AT); Florian Schmid, Buchs (CH); and Jasmin Smajic, Schöfflisdorf (CH)
Assigned to Hilti Aktiengesellschaft, Schaan (LI)
Appl. No. 17/783,464
Filed by Hilti Aktiengesellschaft, Schaan (LI)
PCT Filed Dec. 11, 2020, PCT No. PCT/EP2020/085685 § 371(c)(1), (2) Date Jun. 8, 2022, PCT Pub. No. WO2021/122351, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 19218916 (EP), filed on Dec. 20, 2019.
Prior Publication US 2023/0018142 A1, Jan. 19, 2023
Int. Cl. B25C 1/06 (2006.01); H02K 33/00 (2006.01)

CPC B25C 1/06 (2013.01) [H02K 33/00 (2013.01)]

20 Claims

1. A tool for working a substrate, the tool having a stator and a working piston, which is intended to move relative to the stator along a working axis, and the tool also having a drive, which is intended to drive the working piston along the working axis from a starting position onto the substrate, the drive having a stator coil arranged on the stator and being intended to apply electrical current of a first current intensity I₁to the stator coil in order to generate a magnetic field which accelerates the working piston relative to the stator, the drive having a piston coil arranged on the working piston and being intended to apply electrical current of a second current intensity I₂to the piston coil in order to generate a magnetic field which accelerates the working piston relative to the stator, the second current intensity I₂being less than the first current intensity I₁.