Process for the production of multi-layered brushes and brushes obtained by the process

US5701046A · kind A · utility

Assignee

• Le Carbone Lorraine · FR

Inventors

• Eric Kammerer · Langres, FR
• Lothar Biering · Frankfurt, DE
• Erhard Grohs · Oberursel, DE
• Klaus Groht · Florstadt, DE
• Conrad Reynvaan · Frankfurt am Main, DE
• Horst Siegmund · Arnoldshain, DE
• Jorgen Spangenberg · Bad Vilbel, DE
• Arwed Uecker · Farmville, US

Key dates

• Filing date: Aug 16, 1994
• Grant date: Dec 23, 1997
• Expiry date: Aug 16, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49119
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

The process comprising the charging into a mould (3) of at least one electrically conductive powder (4), the compression by means of a piston (5) of the contents of the mould to form a crude brush (7), the heat treatment of said crude brush (7) as well as the fixing of the ends of the electrical conductors (2), characterised in that the charging involves at least the simultaneous introduction of at least two conductive powders (4B, 4A and/or 4C . . . ) for obtaining a brush formed by integral blocks (1B, 1A and/or 1C . . . ), the junction (1AB and/or 1BC . . . ) between said blocks being orientated at least in part in the compression direction (13).