Patent · US Expired

Roll commutator for electric motors and dynamos, and method of manufacturing it

US5602438A · kind A · utility

2Cited by

6References

7Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Ludwig Reisnecker · Ludwigsburg, DE
Martin Schwertle · Schwieberdingen, DE
Winfried Brettmann · Bad Salzdetfurth, DE
Friedrich-Otto Behrens · Garbsen, DE
Hans Deierling · Hildesheim, DE
Peter Franz · Bad Salzdetfurth, DE
Siegfried Hauptmann · Hildesheim, DE
Claus Pollack · Bettrum, DE
Stefan Ossenkopp · Harsum, DE

Key dates

Filing date	Oct 24, 1995
Grant date	Feb 11, 1997
Priority date	—
Expiry date	Oct 24, 2015

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49011
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A roll commutator for electric motors has a plurality of bars adjacent to one another and produced from a continuous metal section. The metal section already has projections on one of its sides before the production of the bars, which projections serve as anchoring claws after rolling up the line portions produced from the metal section. Additional tools and processing steps are not needed since it is not necessary to process the claws when manufacturing the roll commutator.

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