Patent · US Expired

Rotary-percussion electrical tool

US6758288B2 · kind B2 · utility

10Cited by

8References

4Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Martin Richter · Stuttgart, DE
Konrad Artmann · Schondorf am Ammersee, DE
Hans-Werner Bongers-Ambrosius · Munich, DE

Key dates

Filing date	Jul 29, 2002
Grant date	Jul 6, 2004
Priority date	—
Expiry date	Jul 29, 2022

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2217/0061
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A percussion electrical tool including an electrical motor (6) located in a firedamp-protected housing (6), control electronics (4) for controlling operation of the electric motor (6); an inverted rectifier (5) connecting the control electronics (4) with the electric motor (6); an electronic module (9) located in the housing (3); an intermediate wall (7) for separating the electronic module (9) from a portion of a housing volume in which the electric motor (6) is located, connected with the inverted rectifier in a heat-conductive manner, and having a fluid-cooled cooling medium conduit.

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