Patent · US Expired

Method of producing a commutator of an electrical machine

US6643912B1 · kind B1 · utility

1Cited by

3References

6Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Friedrich-Otto Behrens · Garbsen, DE
Hans Deierling · Hildesheim, DE
Stefan Ossenkopp · Harsum, DE
Martin Schwerdtle · Schwieberdingen, DE

Key dates

Filing date	Jun 25, 2001
Grant date	Nov 11, 2003
Priority date	—
Expiry date	Jun 25, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49012
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a method for producing a commutator ring (10) for a commutator of an electrical machine, in which the laminas (12) of the commutator ring and fastening means (18) are formed out of a band material (27), and a selectable number of laminas (12) are then closed to form the commutator ring. The fastening means are produced with a special tool (35) in the form of dovetail grooves (22) by means of a so-called furrowing operation, which is done simultaneously from both face ends of the laminas (12).

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