The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 2023
Filed:
May. 29, 2019
Hilti Aktiengesellschaft, Schaan, LI;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
A tool comprising a drive-in element, transferring a fastening element into a substrate along setting axis by a setting energy E, a drive for driving the drive-in element along the setting axis, the drive comprising a capacitor, a rotor, and a coil, wherein current flows through the coil generating a magnetic field accelerating the drive-in element toward the fastening element, wherein a current intensity Aof current flowing through the excitation coil while discharging the capacitor has a time profile with a rising edge, a maximum current intensity Aand a falling edge, Arising during current rise time Δtfrom 0.1 to 0.8 times Aand during impact time Δtis more than 0.5 times the A, wherein Δtis at least 0.020 ms and at most 0.275 ms and/or the impact time Δtis at least 0.15 ms and at most 2.0 ms.