Patent · US Expired

Percussive striking electric tool device

US6651860B2 · kind B2 · utility

7Cited by

11References

7Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Konrad Artmann · Schondorf am Ammersee, DE
Johann Augustin · Munich, DE
Martin Mayr · Ilmmünster, DE
Martin Richter · Stuttgart, DE

Key dates

Filing date	Jul 24, 2002
Grant date	Nov 25, 2003
Priority date	—
Expiry date	Jul 24, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH02K29/06
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electric tool device (1) for an at least partially rotating and percussive striking driving mechanism with a pneumatic striking mechanism (2), which is driven over a gear assembly (9) by an electronically commutated electric motor (3) with an internal rotor (5) having poles (4) and an external stator (8), having field coils (7) connected with a DC-AC converter of control electronics (6), the power take-off side of the rotor shaft (10) being mounted in the gear assembly (9) and the driving end of the rotor shaft (10) with the freely protruding poles (4) engaging the stator (8), being introduced coaxially into the stator (8).

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