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US 11,590,640 B2Granted
Setting tool
AssigneeHilti Aktiengesellschaft
InventorsPeter Bruggmueller, Chafic Abu Antoun, Tilo Dittrich
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AssigneeHilti Aktiengesellschaft
InventorsPeter Bruggmueller, Chafic Abu Antoun, Tilo Dittrich
Estimating the term…
A setting tool driving fastening elements, comprising a holder for a fastening element; a drive-in element transferring a fastening element in the holder into a substrate along a setting axis by a setting energy Ekin of at least 30 J and at most 600 J; a drive for driving the drive-in element toward the fastening element along the setting axis, the drive comprising a capacitor, a rotor on the drive-in element; and, an excitation coil, which during discharge of the capacitor is flowed through by current and generates a magnetic field accelerating the drive-in element toward the fastening element, the drive-in element having a piston diameter dK and a piston mass mK, and wherein, for dK, 2 3 ( a + b E k i n n ) ≤ d K ≤ 4 3 ( a + b E k i n n ) where a=33 mm, b=6 mmJ−n and n=⅓ and/or, for mK, 2 3 ( c + d E k i n n ) ≤ m K ≤ 5 3 ( c + d E k i n n ) where c=20 g, d=30 gJ−n and n=⅓.
A setting tool for driving fastening elements into a substrate, comprising a holder for holding a fastening element;
Dependencies are inferred from the claim text.