Patent · US Expired

Angle grinder with electric drive

US6632128B2 · kind B2 · utility

20Cited by

6References

7Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Guenther Berger · Notzingen, DE
Roland Walz · Stuttgart, DE
Peter Stierle · Rübgarten, DE
Ralph Dammertz · Rantoul, US
Maria-Margareta Sulea · Echterdingen, DE
Stefan Heess · Echterdingen, DE

Key dates

Filing date	Apr 15, 2002
Grant date	Oct 14, 2003
Priority date	—
Expiry date	May 21, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH02K5/24
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A power tool (10), in particular an angle grinder, having a housing (12) that receives an electric motor (21) and a gear (26), the motor (21) having a rotor (210) which is guided in rotor bearings (2100) and on one hand carries a collector (2102), which collector can be put into contact with a voltage source via carbon brushes (23) supported in brush plates, is made sturdier and easier to install in that the housing (12) comprises two longitudinally split housing shells (120, 121), and that the brush plates are part of a bearing bridge (24) that carries both the rotor bearing (2100) and the carbon brushes (23), and the bearing bridge (24), in the guide region of the carbon brushes (23), comprises plastic.

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