Patent · US Expired

Method for production of a multi-layer carbon brush

US7308759B2 · kind B2 · utility

0Cited by

8References

9Claims

0Family size

Assignee

SCHUNK KOHLENSTOFFTECHNIK GMBH · DE

Inventors

Rainer Sperling · Biebertal, DE
Martin Schwarzer · Würselen, DE
Rolf Heilmann · Gießen, DE
Bernd Rinn · Biebertal, DE

Key dates

Filing date	Mar 3, 2003
Grant date	Dec 18, 2007
Priority date	—
Expiry date	Mar 10, 2024

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49119
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for production of a multi-layer carbon brush including at least two electrically-conducting functional layers made from carbon material and at least one insulation layer made from an electrically-insulating material, running between consecutive functional layers. According to the invention, the corresponding multi-layer carbon brushes and the layers with desired thickness can be produced by applying the carbon material and the electrically-insulating material in a mold in a sequence corresponding to the layer sequence of the multi-layer carbon brush for production in powder form, then pressed and finally heat-treated.

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