Patent · US Active

Hand-held power tool

US11364611B2 · kind B2 · utility

3Cited by

3References

12Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Christian Schallert · Bludenz, AT
Jürgen Pritz · Rankweil, AT
Marcel Wondra · Bludenz, AT
Carl Hoffmann · Bodolz, DE
Walter Vallaster · Göfis, AT

Key dates

Filing date	Dec 20, 2019
Grant date	Jun 21, 2022
Priority date	—
Expiry date	Dec 20, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2250/391
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A chiseling hand-held power tool having a tool holder for holding a tool on a working axis, an electric motor, and a striking mechanism. The striking mechanism has an excitation piston coupled to the motor, a striker guided on the working axis and a pneumatic chamber closed by the excitation piston and the striker for coupling a movement of the striker to the excitation piston. The rotational speed of the electric motor corresponds to at least 20 times the striking rate of the striking mechanism.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.