Patent · US Expired

Drilling implement

US6479918B1 · kind B1 · utility

9Cited by

1References

6Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Helmut Burger · Waiblingen, DE
Lutz Troeder · Fürstenfeldbruck, DE
Ernst-Rudolf Lübkert · Landsberg, DE
Georg Brami · Landsberg, DE

Key dates

Filing date	Oct 25, 2000
Grant date	Nov 12, 2002
Priority date	—
Expiry date	Oct 25, 2020

Classification

Technology area (CPC H)Electricity
CPC primaryH02K23/18
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The hand-held drilling and/or screwing implement has a housing with a handle, an electrical driving motor, a carbon brush holder ring and a switching body, which interacts rotationally locked with the carbon brush holder ring. At the carbon brush holder ring, two carbon brush holders are disposed opposite to one another and the switching body has an actuating element, which is disposed on the side opposite to the handle. With the help of an axial positive connection, the carbon brush holder ring can be fastened to the stator, so that it can be inserted together with the stator as a unit in the housing.

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