Patent No. EP3801993 (titled "Setting Tool") was filed by Hilti on May 29, 2019. The application was issued on May 17, 2023.
A setting tool for driving fasteners into a substrate, comprising a capacitor that stores electrical charge and energy, and an excitation coil that generates an excitation magnetic field when the capacitor discharges. The excitation magnetic field induces a circulating electrical current in a squirrel-cage rotor, which drives a driving element along a setting axis to set the fastener. The tool achieves high efficiency and setting quality through optimized capacitor and coil design.

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