Fastener Driving Tool
Patent No. EP3801989 (titled "Fastener Driving Tool") was filed by Hilti on May 29, 2019. The application was issued on Apr 19, 2023.
Patent Summary
A setting tool for driving fasteners into a substrate, comprising a receptacle for receiving a fastener, a driving element for driving the fastener into the ground, a drive for driving the driving element, and an electrical capacitor, squirrel-cage rotor, and excitation coil. The drive generates a magnetic field that induces a circulating electrical current in the squirrel-cage rotor, which in turn drives the fastener into the ground. The tool achieves high efficiency and good setting quality through optimized design parameters, including a specific range of piston diameters and masses, and a maximum current density in the excitation coil.
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Date
Description
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EP3801989
- Application Number
- EP19726425A
- Filing Date
- May 29, 2019
- Status
- Granted And Under Opposition
- Mar 17, 2023
- Publication Date
- Apr 19, 2023
- External Links
- Slate, Register , Google Patents